Preheat your air fryer to 380°F and lightly coat the basket with non-stick olive oil spray.
While the air fryer heats, pat your chicken thighs dry with a paper towel. Mix the smoked paprika, garlic powder, onion powder, salt, and black pepper in a small bowl.
Rub the seasoning mix evenly onto both sides of the chicken thighs, pressing gently with your fingers to ensure it adheres well.
Place the chicken thighs smooth side down in the preheated air fryer basket, making sure they do not overlap.
Cook in the air fryer for 10 minutes. Then, use tongs to flip each thigh and continue air frying for another 4 – 5 minutes, or until the internal temperature reaches 165°F and the chicken is fully cooked.
Serve immediately with a squeeze of lemon, a sprinkle of freshly chopped parsley, and enjoy your flavorful and juicy chicken thighs!