If using store-bought pizza dough, allow to sit at room temperature for 30 to 45 minutes.

Place oven rack in the center position and preheat oven to 475ºF (246ºC).

Place a 12-inch cast-iron skillet in the oven to heat.

Lightly flour a work surface, the dough, and rolling pin. Roll the dough out into a 12-inch circle.

Carefully remove the skillet from the oven and place on a heat-safe surface.

Add olive oil to the skillet and use a paper towel to evenly spread into the pan.

Carefully add the pizza dough to the skillet, spreading the edges into the corners of the pan.

Lightly brush olive oil on the edges of the crust.

Bake the pizza dough for 3 minutes to par-bake the crust.

Remove the pizza dough from the oven and evenly spread the pizza sauce over dough.

Sprinkle the cheese over the sauce.

Add the pepperoni, bell pepper, red onions, mushrooms, and olives on top.

Sprinkle the Italian seasonings and black pepper on top.

Bake the pizza until the bottom is golden brown and crispy, 10 to 12 minutes.

Slice the pizza and enjoy hot.