Sterling, my little pewter, has an odd-looking (to me anyway) lower 'lip'. It looks dry or crusty, sort of. He's had it since I got him. He's in the clear phase of his shed right now, so I will take a post shed picture and see if it looks any different then. (Although it didn't go away with his last shed either.) It doesn't seem to bother him whatsoever. I feed him F/T and he was being fed live before I got him, although just pinkies, so I don't think they could have injured him at all.
He flicks his tongue normally, and I've seen inside his mouth when he 'yawns' and it all looks normal in there.
(I apologize for my hairy carpet!)
He flicks his tongue normally, and I've seen inside his mouth when he 'yawns' and it all looks normal in there.

(I apologize for my hairy carpet!)