Check for pin feathers.
I have one that is almost done and another that just blew out a huge amount of feathers to kick hers off. The rooster molts for months very slowly so you hardly notice and the rest haven't started yet.
Check the spots where feathers look to be missing, part the feathers that are there to look at the skin. If she is molting or regrowing feathers it can be uncomfortable, so keep handling to a minimum if you see pinfeathers coming in.