Talked to the vet and now I feel silly. He apparently had stuck shed around and on the burn area and the old/stuck scales are starting to come off, the pink is the scales underneath. Since not all the scales were stuck, her words, "It looks scary but it's actually complete natural." I was just so worried last night after his soak, which the vet told me to keep doing.

On the plus side he took his antibiotics pretty well. I was nervous about that too but it turned out to be much easier than I assumed.

Thank you all for your help!!