Looks like the begining of mouth rot bro. I would drop the humidity to 35% and bump temps a few degrees. Mouth rot is usually secondary to a another problem. You might want to get a vet to take a look and swab and culture the swollen area.
Borrowed from the web on treatment -
Treatment of mild cases with no anorexia consists of improving the husbandry and nutrition and twice daily topical application of dilute iodine (Betadine) or chlorhexidine (Nolvasan) solution. Ask your veterinarian about the appropriate dilution for your particular pet. It is important that a solution and not a scrub is used. Scrubs contain soap and are irritating to the mouth. Hydrogen peroxide is also sometimes used as a topical medication.
In addition to the above, moderate cases of mouth rot usually require topical (applied to the mouth), parenteral (oral or injectable) antibiotics, or both. The bacteria that cause mouth infections in reptiles are often resistant to many antibiotics. Therefore, your veterinarian may need to change antibiotics once the culture results are available.
More serious cases require topical or surgical removal of the caseous debris, nutritional support (see anorexia in snakes), fluid therapy.
In mild and moderate cases, if husbandry improvements are accomplished by the owner in a timely fashion, the prognosis (estimate for getting better) for recovery is good to excellent. The prognosis is guarded for cases with significant caseous debris and grave for reptiles with significant bone involvement.
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