While not all air fryer models require preheating, it's a good practice to start with a hot cooking environment. Preheat the air fryer to 375°F (190°C) for about 3-5 minutes.

Lightly brush the frozen chicken thighs with olive oil or any other preferred cooking oil. This helps to crisp up the skin and aids in the even cooking of the chicken.

Optionally, sprinkle or rub your choice of seasonings (like salt, pepper, garlic powder, paprika) onto the thighs. The oil will help the seasonings adhere.

Place the frozen chicken thighs in the air fryer basket in a single layer. Ensure they are not touching or overlapping. This ensures even air circulation and consistent cooking.

Set the temperature to 375°F (190°C) and cook for about 25-30 minutes. Halfway through the cooking time (around the 12-15 minute mark), use tongs to flip the thighs to ensure even cooking.

For a crispier skin, increase the temperature to 400°F (205°C) during the last 5-7 minutes of cooking. This will render the fat in the skin and give it a nice crunch.

Use a meat thermometer to ensure the chicken thighs are thoroughly cooked. The internal temperature should reach at least 165°F (74°C) for safety. Depending on the size of your thighs and the efficiency of your air fryer, you might need to adjust the cooking time slightly.

Once cooked, remove the chicken thighs from the air fryer and place them on a plate or serving platter. Allow them to rest for a few minutes to redistribute the juices. Serve with your choice of side dishes and enjoy!