I'm going crazy, mine are 5 weeks on Monday. I am starting to figure out I have a few brahmas, and definitely Columbian Wyandotte's. I have some white chickens with grey eyeliner I call it.
A lot of Cochin's, one of which has a half crushed foot, so he hops, it happened when he was a week old.
He seems to be doing very well despite his handicap.
But I sure do have a lot, I love watching them, then think "what was I think!"
Have you tried a brace type thing on its foot? It would probably only have to stay on 3-4 days and it would greatly help the chick. It would flatten the foot out and straighten it up.