Start by patting the chicken thighs dry with paper towels to ensure they crisp up nicely in the air fryer.
In a mixing bowl, combine the olive oil, garlic powder, onion powder, paprika, dried oregano, salt, and black pepper. Mix into a paste.
Add the chicken thighs to the bowl and coat them evenly with the spice mixture. Make sure each thigh is well covered.
Preheat the air fryer to 400°F (200°C) for about 5 minutes.
Once preheated, place the chicken thighs skin-side down in the air fryer basket. Do not overcrowd; cook in batches if necessary.
Cook the chicken thighs for 12 minutes, then flip them over so the skin side is up and cook for an additional 10-13 minutes, or until the internal temperature reaches 165°F (75°C).
After cooking, let the chicken rest for 5 minutes before serving to retain moisture.