There are a lot of things chickens love to eat but, like kids with candy, it can ruin their appetite for the balanced chicken feed they should be eating. Treats should be given only in moderation - some favorites include scrambled eggs, cooked oatmeal, various fruits & veggies, meal worms(
), and table scraps - avoid highly salted foods. Chickens are omnivores and will eat chicken, turkey etc. Some people put out the carcass after Thanksgiving, etc. and the chickens will pick it clean.