Season the thinly sliced ribeye with salt, black pepper, and garlic powder.
Melt the butter in a skillet over medium heat. Add the minced garlic, then the onions and peppers. Sauté 4–5 minutes until softened, then remove from the pan and set aside.
Add the olive oil to the same skillet and brown the steak fully.
Return the onions and peppers to the pan. Add the provolone and stir until melted through. Remove from heat and let cool 5 minutes.
Press or roll each biscuit into a 4-inch round.
Spoon about 2 tablespoons of filling onto one half of each round and top with 1 teaspoon shredded mozzarella.
Fold the dough over and press the edges together, crimping firmly with a fork to seal.
Lightly spray the air fryer basket and the tops of the empanadas with oil.
Air fry at 360°F for 8–10 minutes, in a single layer, until golden brown and cooked through. Cook in batches as needed.
Rest 3–5 minutes before serving. Plate, serve, and enjoy!