What are these back spots?

[Lfhenry]

I not noticed that on one of my EE hens these back spots have appeared on her head. None of my other hens have this and she’s acting, eating and drinking normally. Does anyone know what this could be?? I’ve tried doing research and can’t find anything.

 

[MysteryChicken]

All I see is feather coloration.

 

[AZcluckers]

I agree, it just looks like feathers to me.