I agree with Narroj, from these pictures little Nugget seems to be alright, besides the bumps on his nose. His eyes are bright and clear, his skin looks healthy and is a good color and if there are no other blemishes, he should heal on his own.

There is a possibility that this is just a harmless reoccurring phenomena. I would just let him be in his old tank with the other White's, but watch him closely to make sure he remains healthy-looking. If you notice any skin abnormalities or cloudiness in his eyes it could be a sign of infection, but right now I'd say you have little to fear.