Hi there, I don't see a specific spot. Do you mean the tip of his nose or the slight greyish patch over his eye ? If so that looks like small areas of harmless unshed skin right now.
Possibly just an area that turned darker. It doesn't look like fungus in that photo but just a darker patch of scales perhaps contrasted more by lighter shedding skin around it. I would keep an eye on it and see if it starts to look damaged or start spreading though.
I can't tell from the photo, but is it an actual lump or growth that is on top of the skin or sticking up out of the skin, or is it flush and just a discoloration?
Could you take a new photo of it now that he shed over top of it? Try to get a closer shot if you can, and maybe one sort of from the side showing any elevated area.