Preheat the air fryer: Set it to 400°F (200°C) and let it heat for 3–5 minutes. A hot basket helps the fish cook evenly and release easily.
Prep the fish: Pat the tilapia dry on both sides with paper towels. Dry fish browns better and won’t steam.
Mix the seasoning: In a small bowl, combine salt, black pepper, garlic powder, onion powder, paprika, and lemon zest.
Oil and season: Brush or rub the fillets with olive oil. Sprinkle the seasoning mix evenly on both sides.
Drizzle with fresh lemon juice.
Prepare the basket: Lightly spray the air fryer basket with cooking spray to prevent sticking.
Arrange the fillets: Place tilapia in a single layer, leaving space between pieces. Work in batches if needed; don’t overcrowd.
Air fry: Cook at 400°F (200°C) for 7–9 minutes, depending on thickness. Tilapia is thin and cooks quickly.
Check doneness: The fish should flake easily with a fork and be opaque throughout.
An instant-read thermometer should register 145°F (63°C) at the thickest part.
Finish with lemon: Squeeze extra lemon over the fillets right before serving. Garnish with parsley or dill if you like.
Serve: Pair with steamed rice, quinoa, roasted asparagus, simple salad, or garlic green beans.