I have a chicken that thinks she is the fashizzle. Bossey! At bed time, go with them and love on your bossey hen. Sing to her and rub on her, what ever she likes, only to her. Make sure they are all calm and where she wants them to be. This will only take a few times to do, before she knows she is the bomb and will leave the others alone (pretty much). If she is in a bad mood ... gotta do it again.