Hi there, a couple of loose scales are no problem and he definitely just has a natural yellow tinge. Many of the beardies I raised had yellow + orange, it's a very common color. Be aware that a trip to an " exotics " vet can end up in a wrong diagnosis, waste of money and at times serious harm to your dragon. If you're set on going, rule out Y.F altogether and don't allow any treatment if you don't have a diagnosis. Some vets will give a dewormer when there is no fecal test, that's a red flag right off the bat. Is there a particular reason for the vet visit or was it fear of fungus ?