Snails! My Jax Ferdinand actually fell off a branch once trying to get to a snail. You've never seen a chameleon that excited. A close second is cabbage moths.
My Jacksons love waxworms ... at least that's what I'm told their called. I haven't experimented much but I do know they not real thrilled about roaches.
Lazy Boy gets bored so easy. I got to switch it up all the time. One day he will run over anything for a horn then the next time act like he has no interest. He seems to like worms over other things but rarely like Blue Bottle Flies
Mine usually go nuts for mealworm beetles. Probably because the only time they get them is when I want to feed them during educational presentations. Probably they love them because they are "rare" for them.
Last presentation I did, I brought along some green banana roaches instead. Soon I had a few bright green roaches flying around the auditorium.