Pat the sliced eggplant with a paper towel to remove excess moisture. Place the eggplant in a single layer in the air fryer and cook at 400 degrees for 2 minutes. Then flip the eggplant and cook for another 2 minutes.: You'll notice the dampness leaving the surface, which helps the heat brown the skin rather than steam it. As the moisture dissipates the aroma becomes more concentrated and slightly vegetal. If you skip this step the eggplant may turn mushy instead of crisp, so make sure each slice is patted dry. A common mistake here is rushing and leaving soggy slices; that will prevent the air fryer from producing a crisp edge.
Spread the 1/2 cup marinara sauce evenly over the eggplant. Top with 1 cup mozzarella cheese, 1/2 cup Pepperoni or favorite toppings, and sprinkle with 1 tablespoon Italian seasoning.: At this point you'll hear a soft sizzle as the hot air meets the surface, and the edges will begin to firm. The initial burst of high heat sets the texture, locking in structure so they can carry toppings. Avoid overcrowding the basket, because layering slices will block airflow and lead to uneven cooking.
Cook for 5 more minutes or until the cheese is bubbly and lightly brown on the top.: After flipping, the underside will take on a faint golden hue and a slightly roasted scent will develop. This short second burst ensures both sides are evenly set. If you notice one side browning much faster, adjust placement and check for thicker slices, as uneven thickness is a frequent cause of uneven doneness.
Spread the 1/2 cup marinara sauce evenly over the eggplant: The sauce releases its tomato fragrance and bright acidity as it warms, pairing with the roasted notes of the eggplant . Spread it thinly so the moisture doesn't pool. Over saucing is common, and it will prevent the cheese from melting properly and make the base soggy.
Top with 1 cup mozzarella cheese, 1/2 cup Pepperoni or favorite toppings, and sprinkle with 1 tablespoon Italian seasoning: As the toppings come together you'll see the colors and textures contrast, and the aromas mix into a familiar pizza scent. Distribute the mozzarella cheese to cover key areas so you get gooey stretch in every bite. A frequent error is piling toppings too high, which can insulate the cheese and slow melting; keep a balanced layer for the best result.
Cook for 5 more minutes or until the cheese is bubbly and lightly brown on the top: In these final minutes watch for the mozzarella cheese to go from glossy to gently blistered, with tiny golden spots forming. You'll hear faint bubbling and feel a warm, satisfying aroma. If the tops are browning too quickly while the cheese stays cool, lower the temperature slightly and extend the time, as intense heat can char toppings before they meld.