Have you checked her for lice and mites?I have a 1 yr old RIR that is laying thin shelled eggs, has pasty butt and is losing the feathers around her ears. Can someone help me with what might be going on with her?View attachment 1820336 View attachment 1820336
It would be a good idea to get a fecal float to rule out worms.
Wash up your hen's bottom, look to see if there is a discharge.