My girls don't forage so I "forage" for them. That includes weeds from my unsprayed garden and lawn, carrot and other peelings, berries past their best, canned food my cat hasn't finished and, if I don't think there's been enough "green", shredded cabbage as well.
i've been doing that for my flock for 3 years so now that I have 5wo chicks (or are they too big to be called chicks at 5 weeks?) I put some in their kennel inside the run too. It's always gone by the time I go back out there!
The chickens can do most of the composting for you. If you want to you can finish it off in your compost bin or whatever but let the chickens do the work at first. It’s good for them, it’s good for the environment, it’s just good all around. And it’s much faster than you think.We give the chickens greens quite often. They are usually in the form of weeds and garden clippings though. As for kitchen waste, most of it goes to our compost bins along with all other plant based waste and the bird poop.
I absolutely recommend composting kitchen scraps over feeding them to chickens for the dietary reasons listed above. Chickens do enjoy scratching through a compost pile and picking desireable bits too; though I would try to only give them access to a pile that has finished cooking. This way they get to eat good quality (dietarily speaking) bugs and microflora that will add to their balanced diet and digestive health rather than likely lead to long term problems like obesity.
So compost is an all around win - the you keep food waste out if landfills, you have a way to process chicken poop, you get a great garden amendment, and the chickens get a beneficial dietary supplement.