Hello there,
I noticed these darken scales on my beardie the other week and I am concerned about what they might be. The one nearer his head is a small lump and it irritates him when it's touched. Any advice would be great thanks.
The dark spots look like some kind of growth. I suggest having an experienced vet take a look and possibly test a skin sample to see what's going on and treat as needed. As a precaution I would apply some antifungal cream like lamisil to the areas. That may help if the issue is fungal but shouldn't cause harm if it's not.