Preheat your air fryer to 380°F (193°C) for about 5 minutes.
Pat the chicken breasts dry with paper towels to remove excess moisture.
In a mixing bowl, combine olive oil, garlic powder, onion powder, paprika, dried oregano, salt, and black pepper, and add lemon juice if using.
Coat each chicken breast evenly with the seasoning mixture, covering all sides.
Once the air fryer is preheated, place the chicken breasts in a single layer in the air fryer basket.
Cook the chicken breasts for 10 minutes, then flip them using tongs and cook for an additional 8-10 minutes until the internal temperature reaches 165°F (75°C).
Remove the chicken breasts from the air fryer and let them rest for 5 minutes before slicing.
Serve the chicken breasts with your choice of sides or slice them for use in salads, wraps, or sandwiches.