i also love pizza but i get really full after probably 2 slices so it's not that out of control for me to eat it but i do avoid it just because it sets me off on a voyage onto other goodies.
Nearly anything! Pizza, chips and salsa, healthy foods, junk foods, you name it. We don't usually have chocolate in the house, so that's not really a concern. Cereal, chips, whatever. There really is not a specific trigger.
This may sound funny but milk is a trigger for me. I could drink an entire gallon of 2% milk a day if I let myself. Then when I drink it I think of all the things that would go great with milk and it makes me crave them, i.e. oreos, choc. chip cookies, cakes, breads, rolls... So, I have limited myself to only buying 1% or skim milk because it doesn't taste good to me to drink it by itself. Therefore, I only have it with cereal. This also cuts down on cost because I'm not having to run out and buy a gallon of milk every other day.