Hi! I am having a similar problem, but with my purebred ameraucana hen. She is kind of lower/ middle in the pecking order, in a flock of 5 hens. I just checked my other ameraucana, top in the pecking order. No feather loss. The weird thing about my hen is that the feather loss is mostly on one side of her face. She is not molting, and I'm thinking that it may be mostly happening at night, due to the fact that most of the feather loss is on one side of her face. There is no feather loss on the rest of her body, either. I'll post pictures later if I can get a good one.
She is about a year old, (This week, actually) and has been laying for a month or two. She has been eating layer pellet since my BRs started laying, the August of last summer. She gets oyster shells and grit, if that means anything, and she gets to go out in my backyard for a couple hours when I clean the coop. (Believe me, she would go out every day if my parents were more tolerant of chicken poop on the patio
)
Does anyone know how to help this? She is looking very lopsided right now and I don't take her to shows or anything, but I would prefer if she got her feathers back, if possible.

She doesn't seem to be in pain, and the only redness is slightly where the feathers would have been poking out. The skin around them is normal. My hens are relatively nice to each other, but twice I have seen her let them pick at her face and comb while she squats. (It's hard to describe how she does it, but it seems rather forced or fearful, if that makes any sense. She goes really low and just lets them peck.) Any ideas?
Thanks in advance!