I'm a bit freaked out by feeding the chickens chicken. I did it once. I gave them leftover stir-fry, with chunks of chicken meat in it. My banty rooster choked on a piece of chicken! It got stuck in his throat, but he could still breath. He couldn't get that piece of meat down or up so I had to pull it out of his beak, and up out of his throat. A cat ran off with the meat after that.
I've fed mine ground beef and stuff like that, but I avoid given them poultry, its just weird to me. I do give them eggs though, so I guess I shouldn't be so bothered. Maybe I'll try it again, but no stir fry this time!