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100% normal. All chicks go through a really ugly stage. My australorp chick is a month old right now and you can see pink skin around her wings and on her back. My buff orp chick is nearly fully feathered and you can't see much skin anymore. Chicks grow out of that stage in a couple of weeks, at which point they're ready to go outside.
Meaties (cornish x) birds are especially ugly because they grow so fast, stink so much, and poop in great quantities.