I agree.To me, that looks more like some scabs caused by Fowl Pox or an infected area due to a fighting injury. In the case of Fowl Pox, the scabby area should dry up and heal within 2-6 weeks. There is nothing you can really do to treat Fowl Pox, since it is a viral disease. The only thing you could do is treat with antibiotics to prevent secondary infection.
In the case of a fighting injury, I would apply some antibiotic ointment to the area once or twice a day and see what happens. Make sure you don't use any ointment containing any "cain" or "caine" ingredients, since those are harmful.