Looks like bumblefoot to me. Lots of info online on causes and how to treat. Here's just one:Bumblefoot in Chickens
No he acts like a normal rooster. StrangeIt does and yet it doesn't. I wonder if @dawg53 will weigh in on this.
Does he limp or act like he's sore?
Little guy is a cross, between a black sex link, and a unknown rooster. And noHave you tried soaking his feet in warm epsom salts?
And what is his breed?