I agree with everyone who says RED FLAG. There is no way I'd give this guy a second chance.
But honestly, over and above that, it doesn't really matter whether we all think it's a red flag or not. Even if everyone here said, "hey, it's no big deal, it's perfectly normal for a guy to make faces when you order popcorn at the movies and then proceed to hoard it and not let you have any", it bothered your friend. And if someone does something like that, on a first date, something that bothers you enough that you are telling a friend about it, well, do you really need to go out a second time?
As a PP said, first dates are supposed to be BEST behavior. You're trying to impress your date enough to make them want to see you again. If his best "first date" behavior is something that (a) bothers you, and (b) is weird and hard to interpret, do you really want to see the "I no longer have to impress you so I'll relax more" behavior?
My advice to your friend is to cancel the second date and move on.