Preheat the oven to 375°F (190°C).
Line a baking sheet with baking paper and lightly grease with olive oil.
Place the eggplant rounds on the prepared baking sheet and brush them lightly with olive oil on both sides—season with salt and black pepper.
Bake the eggplant rounds in the preheated oven for 10 minutes, until lightly browned and tender.
Remove the eggplant rounds from the oven and spoon a tablespoon of tomato sauce on top of each round.
Sprinkle shredded mozzarella cheese on top of the tomato sauce, followed by your favorite pizza toppings.
In a small bowl, mix together the parmesan cheese, oregano, garlic powder, and onion powder. Sprinkle the mixture over the pizza toppings.
Return the baking sheet to the oven and bake for an additional 10-15 minutes until the cheese is melted and bubbly.
Remove from the oven and let cool for a few minutes before serving.