Short answer
No. In the verses right after, Jesus explains what he means. He says the words he speaks are not his own, and the Father living in him does the works. Earlier in John he told a crowd looking at him that they had never heard the Father's voice or seen His shape. So seeing Jesus cannot mean seeing God (﷾) with the eyes. It means knowing God (﷾) through the one He sent. In John 12 he says it plainly: whoever sees him sees the one who sent him. Islam agrees that God (﷾) worked through Jesus. The Qur'an says he did his miracles by Allah's (﷾) leave, and that no vision can grasp God (﷾).
Full explanation
The verse Christians rely on
Philip, one of Jesus' twelve disciples, asks Jesus to show them the Father. Jesus answers that whoever has seen him has seen the Father. Christians read this as Jesus saying that he is God, so that to look at him is to look at God (﷾). They add verse 7, where Jesus says the disciples now know the Father and have seen him.
“Philip saith unto him, Lord, shew us the Father, and it sufficeth us.”
“Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Shew us the Father?”
“If ye had known me, ye should have known my Father also: and from henceforth ye know him, and have seen him.”
Read on: the works are the Father's
In the very next verses Jesus explains himself. The words he speaks are not his own. It is the Father living in him who does the works. He asks Philip to believe him for the sake of the works. Then he says that anyone who believes in him will do the same works, and greater ones. If his followers can do the same works, the works do not make him God.
“Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works.”
“Believe me that I am in the Father, and the Father in me: or else believe me for the very works’ sake.”
“Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father.”
He had already said they never saw the Father
Nine chapters earlier, Jesus spoke to a crowd that was looking at him. He said they had never heard the Father's voice at any time, nor seen His shape. The same Gospel opens by saying that no man has seen God (﷾) at any time. So in John, seeing Jesus cannot mean seeing God (﷾) with the eyes. It means coming to know God (﷾) through the one He sent.
“And the Father himself, which hath sent me, hath borne witness of me. Ye have neither heard his voice at any time, nor seen his shape.”
“No man hath seen God at any time; the only begotten Son, which is in the bosom of the Father, he hath declared him.”
The language of one who is sent
In John 12 Jesus says that whoever believes in him believes not in him but in the One who sent him. He adds that whoever sees him sees the One who sent him. He speaks of his own messengers the same way: whoever receives them receives him. Nobody takes that to mean the disciples are Jesus. To see or receive the one who is sent is to meet the One who sent him.
“Jesus cried and said, He that believeth on me, believeth not on me, but on him that sent me. And he that seeth me seeth him that sent me.”
“Verily, verily, I say unto you, He that receiveth whomsoever I send receiveth me; and he that receiveth me receiveth him that sent me.”
“He that receiveth you receiveth me, and he that receiveth me receiveth him that sent me.”
"In the Father" is said of the disciples too
Jesus says he is in the Father and the Father is in him. In the same chapter he says that his disciples will be in him, and he in them. He prays that they may all be one, as the Father is in him and he in the Father. These words describe a close bond of purpose, not a shared divine nature.
“At that day ye shall know that I am in my Father, and ye in me, and I in you.”
“That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me.”
“But if I do, though ye believe not me, believe the works: that ye may know, and believe, that the Father is in me, and I in him.”
What the Qur'an and Acts say of his works
Peter, one of Jesus' disciples, says in Acts that Jesus was a man approved of God (﷾). God (﷾) did miracles and signs by him. The Qur'an gives the same account in Jesus' own words: he healed the blind and the leper and raised the dead by Allah's (﷾) leave. It also says that no vision can grasp God (﷾).
“Ye men of Israel, hear these words; Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs, which God did by him in the midst of you, as ye yourselves also know:”
“"And (appoint him) a messenger to the Children of Israel, (with this message): "'I have come to you, with a Sign from your Lord, in that I make for you out of clay, as it were, the figure of a bird, and breathe into it, and it becomes a bird by Allah's leave: And I heal those born blind, and the lepers, and I quicken the dead, by Allah's leave; and I declare to you what ye eat, and what ye store in your houses. Surely therein is a Sign for you if ye did believe;”
“No vision can grasp Him, but His grasp is over all vision: He is above all comprehension, yet is acquainted with all things.”
Verse by verse
John 14:9 — Gospel of John, chapter 14, verse 9
“Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Shew us the Father?”
Cited for
Jesus says that whoever has seen him has seen the Father, so to see Jesus is to see God.
The response
The next two verses give his meaning. His words are not his own, the Father in him does the works, and Philip should believe for the works' sake. In John 12 he says it in plain terms: whoever sees him sees the One who sent him. And in John 5 he told people looking at him that they had never seen the Father's shape.
Where it lands — Read with the verses around it, John 14:9 means the Father is known through His messenger's words and works, not that Jesus is God.
John 14:7 — Gospel of John, chapter 14, verse 7
“If ye had known me, ye should have known my Father also: and from henceforth ye know him, and have seen him.”
Cited for
Jesus says the disciples now know the Father and have seen him, which only makes sense if Jesus is God.
The response
The verse joins seeing to knowing: if they had known Jesus, they would have known the Father. Philip's question in the next verse shows he had not seen the Father with his eyes. John's Gospel has already said that no man has seen God (﷾) at any time. Seeing here means coming to know God (﷾) through the one He sent.
Where it lands — In John 14:7 "seen" means known, as the same verse and John 1:18 show.
Perspectives
Mainstream Christian
Jesus is God the Son. He shares the Father's nature, so to see him is to see the Father made visible.
In John 14:9 Jesus tells Philip that whoever has seen him has seen the Father. Christians read this as a claim to share the Father's nature.
Rebuttal
John records these words, but the next verses explain them. The words are not his own, and the Father in him does the works. In John 12 he says whoever sees him sees the One who sent him. That is how a messenger is spoken of. In John 5 he told people looking at him that they had never seen the Father's shape.
In John 14:7 Jesus says the disciples now know the Father and have seen him. Christians read this the same way.
Rebuttal
Verse 7 joins seeing to knowing: knowing Jesus means knowing the Father. Philip's question in the next verse shows he had not seen the Father with his eyes. John 1:18 says no man has seen God (﷾) at any time, so "seen" here means "known".
The Islamic perspective
Jesus was a messenger of God (﷾). God (﷾) was known through his words and the works God (﷾) did by him. No one saw God (﷾) by looking at him.
In the next verse Jesus says his words are not his own and the Father in him does the works.
Jesus asks Philip to believe him because of the works, and says believers will do the same works and greater.
Jesus told his hearers they had never heard the Father's voice or seen His shape. John says no man has seen God (﷾) at any time.
Jesus says that whoever sees him sees the One who sent him. He says whoever receives his messengers receives him. This is the language of a sender and the one he sends.
The same words, "in me" and "I in you", are used of the disciples. So they describe a bond, not a nature.
Jesus told the people looking at him that they had never seen the Father's shape. So 'seen the Father' in John 14:9 cannot mean seeing with the eyes. It means knowing God (﷾) through the one He sent, which is how the verses around it explain it.
The Qur'an teaches that Jesus' miracles were done by Allah's (﷾) leave. Acts says God (﷾) did them by him.