If you happen to have or can get some plain beef jerky "not spicy" my 4 week old baby chicks absolutely love it, and I don't think you could get more protein. You might also try some live worms if you can dig them up out of the garden or perhaps visit a bait shop. My chickens seem to be as...
I think it should if it is otherwise healthy. I would give it starter feed for a bit with maybe some high protein treats, and see if that will make her grow a bit. As long as the sickness didn't effect her egg organs I would think she should lay normally. She may start laying a bit later than...