Hello Chickenfan,
one of my lavender cuckoo Pekins looks like that - terrible!
Last year I was convinced I was going to lose her, head, neck, and other bits completely bare and as thin as can be.
However she kept going, eating, drinking and freeranging to a certain extent. When her feathers grew back she looked like a Frizzle, but in the end she was her beautiful, smooth self, to start the same thing over again a month ago.
I'm sure the weight loss look is due to feather loss.