Banana01
Songster
The way the beak regrows is kind of like a fingernail i understand. Chickens usually scrape the end off and shape it, but yours is smooth. So i think you will find it is not injured or a problem, just how he has taken care of it.That is what I am talking about. The layers you mentioned do not rub off and appear weird to me. I took this photograph about two hours ago.
It also may have gotten stuck or somwthing to get like that. As long as he is ok now.