Preheat the air fryer to 375°F / 190°C for 3 minutes.
Pat the chicken breasts dry with paper towels, then brush both sides with olive oil.
Mix garlic powder, smoked paprika, onion powder, black pepper, and salt, then rub evenly over both sides of the chicken.
Place the chicken breasts in a single layer in the air fryer basket without touching.
Air fry for 12 to 14 minutes, flipping halfway, until the internal temperature reaches 165°F / 74°C at the thickest part.
Rest for 5 minutes before slicing to keep the juices inside.