Why do I keep seeing more and more Fordyce spots on my penis. It looks like they are spreading. Also does excess masturbation lead to more?

Hmmm have you gone to the doctor? Make sure you go to get checked out. Not sure if its related to masturbation but if you're engaging in that frequently you might want to make sure to keep your penis well hydrated so that you don't get friction burn- Man1 Man Oil is great as they have a money back guarantee. Cheers. 

they are enlarged oil glands. There are some home u can try just google it

The spots, also called Fordyce granules or Fordyce glands, are enlarged oil glands. They are usually present at birth but do not become noticeable until puberty. However, they typically don't spread. Although Fordyce spots are benign, they should be examined by a physician for an accurate diagnosis as the Fordyce spots can be confused with genital warts. Other possible differential diagnoses are milia, epidermoid cysts, and sebaceous hyperplasia.