Preheat the air fryer to 375°F (190°C) for 2-3 minutes.
Place the tortilla on a piece of aluminum foil or parchment liner cut to fit the air fryer basket or tray.
Spread the salsa evenly over the tortilla using a spoon, leaving a small border around the edges.
Layer the toppings: Add a handful of arugula, the halved cherry tomatoes, and sliced brown olives. Sprinkle the crumbled feta cheese over the top and place the fresh mozzarella slice (or shredded mozzarella) in the center.
Carefully place the tortilla in the air fryer basket or tray and cook for 5-6 minutes, checking occasionally, until the tortilla edges are crispy and the cheese is melted.
Garnish with olive oil and a sprinkle of black pepper or oregano if desired.
Use tongs to remove the flatbread from the air fryer, cut into slices, and enjoy while warm.