Peter doesn't argue and just grabs a box to dig in. He is hungry, after all. Since the bite he spends most of the time being at least a little hungry. He also doesn't want to eat as much as he maybe should because taking care of a growing teenage is probably expensive enough. Throw in that metabolism that he's got? He's not trying to eat anyone out of house and home.

"This is pretty good." He agrees after the first bite.