Chickenhick and Chickabator give good advice. I also advise patience. Odds are it will grow out of it.
I don't know if this is an inherited trait or not. I don't know your management methods or your goals. If you raise your own replacements, I would suggest that you consider whether you allow this one to breed. I'm not saying to kill it now or ever. I'm just saying with your goals and methods, you might want to consider not raising replacements from this chick. If you are breeding for show and this one conforms perfectly, you might want to breed from this one specifically. Your option.