Preheat the oven to its absolute highest setting (usually 500°F or 550°F). A screaming-hot environment is mandatory for achieving a crisp, bakery-quality crust.

Drizzle 1 tablespoon of olive oil evenly across a large, rimmed metal baking sheet.

Gently press and stretch the room-temperature pizza dough flat, pushing it into the corners of the oiled baking sheet. Pour the pizza sauce evenly over the dough, leaving a ½-inch border.

Pour 1 tablespoon of olive oil into a small skillet over medium-high heat. Add the diced pancetta.

Cook aggressively until the pancetta renders its fat and the edges become deeply golden and crisp, about 3 to 4 minutes. Use a slotted spoon to transfer the crispy pancetta to a paper towel-lined plate to drain.

Do not wipe out the skillet. Leave the rendered pork fat and oil in the pan.

Add the diced Portobello mushrooms directly into the hot fat. Season with the kosher salt and coarse black pepper.

Sauté until the mushrooms release their moisture and become deeply golden brown, about 3 to 4 minutes. Transfer to the paper towel-lined plate.

Lay the pepperoni slices evenly across the sauced pizza dough.

Scatter the thinly sliced bell pepper, red onion, crispy pancetta, and golden mushrooms heavily over the top.

Cover the entire surface generously with the shredded mozzarella cheese.

Place the heavy baking sheet into the screaming-hot oven. Bake until the crust is deeply charred and golden, the cheese is bubbling heavily, and the vegetables are soft, about 8 to 10 minutes.

Remove from the oven and immediately cut the pizza into 8 large squares. Sprinkle heavily with torn fresh basil and drizzle the final 1 tablespoon of high-quality olive oil directly over the hot crust before serving.