Yep we throw everything in with the chickens - they love curried beef and pork, they are not overly fond of green pepper but like red and orange pepper.Chickens, if given enough divers food know best what they can eat.
There is a lot of nonsense on the internet about food that is/is not poisonous for chickens.
I tend to believe only the citrus peels are poisonous, because my chickens eat the soft, inner part of oranges and such. The peels are not eaten.
FYI: I have one 10 years old without any health issues ever.
Really the only thing they won’t eat is broccoli!
Heck they even had a go at my eyes last year! Yummy!