Well, if the scales are raised up or sticking out from the body, not sitting flush, the first thing I would look for are mites. Mites are nocturnal so you may not see a problem until it's big.
Or... the scales could be bent in half a little, like a crease, and it's not really good, but neither is it terrible like scale rot or something similar.
When in doubt, always take the animal to a quality reptile vet.![]()