Start by patting the chicken thighs dry with paper towels. This will help the skin get crispy in the air fryer.
In a mixing bowl, combine the olive oil, minced garlic, salt, black pepper, cayenne pepper, and lemon juice. Stir until well blended.
Add the chicken thighs to the bowl with the marinade. Make sure to coat each piece thoroughly, ensuring the garlic and spices cover every nook and cranny.
Sprinkle the Parmesan cheese over the chicken thighs, pressing it lightly into the skin to help it adhere during cooking.
Preheat your air fryer to 375°F (190°C) for about 5 minutes. This step is crucial for achieving that perfect crispy exterior.
Place the coated chicken thighs in the air fryer basket, ensuring they are not overcrowded. Cook for 25-30 minutes, flipping halfway through. Use a meat thermometer to check that the internal temperature reaches 165°F (74°C).
Once cooked, carefully remove the chicken from the air fryer and let it rest for a few minutes. This will allow the juices to redistribute. Before serving, sprinkle with chopped parsley and serve with lemon wedges on the side for a fresh burst of flavor.