Step 1: Prepare the Chicken. Start by cutting the boneless, skinless chicken thighs into small bite-sized pieces to ensure even cooking.
Step 2: Season and Coat. In a mixing bowl, combine the chicken pieces with cornstarch, salt, and a dash of black pepper. Toss until each piece is well-coated.
Step 3: Preheat the Air Fryer. Preheat your air fryer to 400°F (200°C) for about 5 minutes.
Step 4: Air Fry the Chicken. Place the coated chicken pieces in the air fryer basket in a single layer and air fry for about 10-12 minutes, shaking halfway through.
Step 5: Prepare the Sauce. In a small saucepan over medium heat, combine ketchup, soy sauce, dark brown sugar, ginger paste, crushed garlic, and red pepper flakes. Stir until heated through and slightly thickened, about 3-5 minutes.
Step 6: Coat the Chicken. Transfer the cooked chicken to a large mixing bowl and pour the prepared sauce over it, tossing to coat.
Step 7: Serve and Enjoy. Your Air Fryer General Tsos Chicken is ready! Pair with steamed rice or sautéed vegetables.