Peter also takes a step back as he's picking up on that feeling that he's in dangerous territory. It probably says a lot that it's a little comforting to feel that dread that only Tony Stark's 'look' could instill in him.

"What? No! I Didn't-I mean-I did. I am dead-well I was back then. Right now. But I come back. Like I said it's way complicated and I've already said way more than I should have and already probably caused a paradox but in my defense this-this was a really bad idea. and it wasn't even mine." But it was his idea to give Beck access to all of Stark Industries weapon systems.