[Havoc]

John tells us he was named Peter at the first meeting. You're calling John a liar. There is no contradicting statement made in Matthew to say otherwise. So you're basically fishing. You'll need a higher threshold of proof than he used his name and his nickname in the same chapter.
I do that with my buddies every day. You are calling someone a liar. So, show us the rest of the evidence that John is a liar or sit down and be reproved.

[Petronski]

You're calling John a liar.

The chronology of their accounts differ. It is YOU who have referred to John as a liar.

[Petronski]

...he used his name and his nickname in the same chapter.

LOL. Priceless. "Peter" is his nickname? And it's used 'in the same chapter.' What a precious, clintonian half-truth.

What you call 'in the same chapter' is actually in sequential verses, as part of the same thought in the same statement. And what you call a 'nickname' is a new name given by Christ Himself.

[iconoclast]

John tells us he was named Peter at the first meeting.

He tells us no such thing!

You apparently are reading the gospels as if they were daily diaries.

By the time John's gospel was put into writing Simon Peter was simply the clearest way to describe the man.

[OLD REGGIE]

John tells us he was named Peter at the first meeting. You're calling John a liar. There is no contradicting statement made in Matthew to say otherwise.

Well maybe Petronski is giving the lie to Scripture. The fact this man "Simon" was known as "Peter" from the time of, and maybe prior to, his meeting with Jesus.

Matthew 4:
[18] As he walked by the Sea of Galilee, he saw two brothers, Simon who is called Peter and Andrew his brother, casting a net into the sea; for they were fishermen.