Hi Nishita, welcome
Is it your appetite that's increased or do you just need something to do with your hands (i.e. grabbing food) in place of lighting up? The hand-to-mouth habit is super tough to break, at least it was for me. I read once that a cigarette craving lasts about 9 minutes...maybe look at it as finding something to distract yourself for 9 minutes other than reaching for a cigarette or a snack?
And if you really are just hungrier - veggies! If you have to overeat something, I would think that's the best option to go overboard on