Not really. He's very young for a calcium deposit and it doesn't seem to be located over a rib (when a rib fractures and heals it often forms a small lump where the callus forms over the break). It could be an abscess under the skin. Keep an eye on it closely...maybe take photos every day or so to see if its getting larger. If so, or if the skin over the lump changes at all take him to a herp vet. At the top of this forum is a list of experienced herp vets by region.