Many people mistakenly believe that chickens only eat chicken feed such as corn and grain, they actually enjoy eating a lot of different foods and typically are not picky eaters.
As a part of the fowl family, chickens are omnivores, meaning they eat a variety of foods from various sources. Omnivores are unique in that they can eat both plants and meat.
Chickens do eat worms and insects, but that does not mean that they are classified as a carnivore.
Commercial feed that is created specifically for chickens is honestly the best food to feed your chicken. Commercial chicken feeds also helps laying hens produce eggs.
You should never feed your chickens raw beans, moldy foods, chocolate, avocados, leaves from tomato plants, or processed human foods.