Diane said, " I'm hoping I can feed them with weeds and what I prune/trim from my plants. Trimmed tomato leaves for example.
I see these as some things that can be used.
Also anything that the chickens might not like such as coffee grounds, crushed eggshells, other plant waste, and tea leaves.
Red wigglers are good for composting. Some kits come with non-native worms that might cause a problem.