Help identify skin issue

[Jeslena]

I noticed mites in the coop this morning - we’ve had a lot of rain. I bathed the main chicken who nests in the box with mites and noticed her tummy looking red and dry. She seems to also be missing feathers. Please help.

 

[coach723]

Is she roosting at night, or sleeping in bedding? Any signs of bumblefoot or other leg/foot problems? Is she currently molting?