It happens to everyone, when I was on a true break (over 2 months without smoking) I could eat normally again, I was never a guy with a big appetite but at least I could get full without smoking before I ate. It just takes time getting used to. Just suffer and when you go back and smoke again lol. Btw forcing food doesn't work, I actually start to feel sick when I would eat more than I wanted to when I stopped smoking.