Crack eggs into a medium mixing bowl, then whisk in the milk. Beat the mixture until the egg yolks are just blended.
In a 10-inch non-stick skillet over medium heat (around 250°F), place 3 circular rings (or crumpets molds) in the skillet. *You can coat the inside of the rings with cooking spray, if you prefer but it is not necessary.
Ladle 2 spoonfuls of the mixture into each ring, or until each of the rings are about half full. Add 2 tablespoons of cheese, and 3 - 4 slices of pepperoni on top of each one. Cook for 3 minutes. Then, cover with a lid and cook a further 3 -5 minutes, or until then eggs have cooked through.
Use a knife or silicone spatula to remove the pizzas from the rings by running the knife along the inside edge of the rings. Enjoy!