I just started chewing bubblegum instead of eating actual food when I'm baked. It helps a lot, and I have been smoking throughout my weight loss.
I always have like 4 different flavours of gum. i'm not gonna lie, sometimes I do eat, but I try and limit the damage, like eating dried fruit and nuts, or celery sticks with almond butter, and ALWAYS put it on a plate before I eat it, NEVER straight from the bag/package, or then I will eat all of it.
Popcorn is a really good idea too, you can eat so much of it before you've actually eaten like 200 calories worth.