Preheat your oven to 400 degrees f. and spritz a 12-cup muffin pan with your oil.
Place your sliced zucchini in a colander.
Lightly sprinkle sea salt on your zucchini then set aside for 15 minutes.
Blot your zucchini of excess moisture with paper towels. The salt should have drawn out a bit of water from them, so gently pat them dry.
To assemble your pizza cups add a round of zucchini into each muffin cup.
Top with a teaspoon of sauce, a slice of pepperoni, a pinch of shredded cheese, and a couple of slices of olives.
Repeat the layers 2 times.
Bake for 16-18 minutes, or until golden brown and melty.
Once finished roasting, carefully remove your pizza cups from the pan while still hot and place them on a platter.
Sprinkle with chopped parsley or basil, if desired, and enjoy!