Help needed...concerned about bump near mouth

I have temporary custody of a 2 yr old iguana. He has a swollen area about the circumference of a pea on the area between his eye and mouth.
I have been trying to find out what might cause this and what should be done about it. He does not show any signs of respiratory infection, mouth appears clear and good color, he has slowed eating a bit with the cooler weather but still has a decent appetite and does not appear to have any problems eating.
He does need larger housing but is otherwise doing well. He occasionally gets into 'escape mode' and rearranges his tank. I think he may have bumped his face against his branch while doing this since the top of the swollen area is slightly red like a possible abrasion.
Has anyone seen this type of thing and how worried should I be?
Thank you.

Without looking at it, it would be hard to say what it is. It might be a wort of even a cyst. However if it gets worse or starts to grow I would take him to the vet.

Also, welcome to the forums!!

Thank you for the welcome. I am usually just a lurker around here

The bump is not a wart. It just popped up the other day. It does not seem to be either growing or going away. Since he is not showing any other signs of a problem I will just keep a close eye on it to see what develops. Thanks for your input.