Preheat the oven to 425°F and line a large baking sheet with parchment paper.
Arrange the mini flatbreads on the prepared baking sheet.
Lightly brush the top of each flatbread with olive oil.
Spread approximately 2 tablespoons of pizza sauce over each flatbread, leaving a small border around the edges.
Divide the shredded mozzarella evenly among the flatbreads.
Add the turkey pepperoni, red bell pepper, green bell pepper, and sliced black olives.
Sprinkle the pizzas with Italian seasoning and garlic powder, if using.
Bake for 8 to 11 minutes, until the cheese is melted and lightly golden and the edges are crisp.
Let the pizzas cool for 2 minutes.
Garnish with chopped fresh basil and serve warm.