They breathe heavy when stressed and with the move he can get stress very easily. Is there bubbles or mucous coming from the mouth/nose? Is he clicking? Or wheezing?
If it's only heavy breathing I think he's fine.
Can you post a pic of him?
Skin is kinda baggy when in shed, keep the humidity about 70 for now in case it is about to shed, other than that he could be a tad underweight.
I'm not sure a vet visit is in order, it would only cause undo stress if nothing is wrong.
Sent from my DROID RAZR using Tapatalk 4