Prepare Ingredients: Gather all your ingredients for the pizza crust and toppings.
Make the Dough: In a bowl, combine the flour, baking powder, and salt. Add the milk and olive oil, stirring until a soft dough forms.
Knead the Dough: Transfer the dough to a lightly floured surface and knead it about 10 times. Shape it into a ball, cover with an inverted bowl, and let it rest for 10 minutes.
Roll Out the Dough: On a baking sheet, roll the dough into a 12-inch circle.
Prepare Parchment Paper: Cut an 8-inch round of cooking parchment paper. Place it in the bottom of the air fryer basket and spray with cooking spray.
Shape the Dough: Unroll the dough onto the parchment paper, tucking the corners under. Shape it into a 10-inch round with a thicker 1-inch border. Press the dough into the air fryer basket, extending it about 1 ½ inches up the sides of the basket.
Pre-Bake the Crust: Set the air fryer to 325°F (165°C) and cook the crust for 10 minutes. Carefully turn the pizza crust over on a counter, remove the parchment paper, and return the crust to the basket. Let it cool for 2 to 3 minutes, or until it's cool enough to handle.
Form the Crust: Press the center of the crust down to create a 1-inch border around the edge. Brush the sides and top of the crust with olive oil. Place the crust back in the air fryer basket and cook for an additional 5 minutes.
Add Toppings: Spread pizza sauce evenly over the center of the dough. Sprinkle with mozzarella cheese, then add vegan pepperoni slices, and finish with Parmesan cheese. Cook for 4 to 7 minutes more, or until the crust is cooked through and the cheese is melted.
Serve: Let the pizza cool for 2 minutes before carefully removing it from the basket using a rubber spatula.
Enjoy your deep pan air fryer pizza!