Pat the chicken dry. Use paper towels to remove surface moisture. Dry skin is your ticket to crispiness.
Preheat the air fryer to 380°F (193°C). A hot basket helps the skin render and brown right away.
Season generously. In a small bowl, mix salt, pepper, garlic powder, onion powder, paprika, and thyme.
Rub the chicken with oil, then coat evenly with the spice mix on all sides.
Arrange in the basket skin side down. Leave a little space between each piece for air circulation. If your air fryer is small, cook in batches.
Cook for 12–14 minutes. This starts rendering the fat under the skin and builds a good base color.
Flip skin side up. Cook another 12–15 minutes, until the skin is crisp and the internal temperature hits 175–185°F in the thickest part of the thigh.
Rest for 5 minutes. This helps juices settle so each bite stays moist.
Finish and serve. Squeeze a little lemon over the top and sprinkle with parsley if you like. Serve with a crisp salad, roasted vegetables, or rice.