Preheat the air fryer to 375°F.
In a large bowl, combine olive oil, garlic powder, onion powder, smoked paprika, dried oregano, salt, and black pepper. Mix well to create a marinade.
Add the chicken breasts to the bowl and coat them evenly with the marinade. Let the chicken sit for about 15 minutes to absorb the flavors.
Place the marinated chicken breasts in the air fryer basket in a single layer, making sure they are not overcrowded.
Cook the chicken for 12-15 minutes, flipping halfway through, until the internal temperature reaches 165°F and the chicken is golden brown.
Remove the chicken from the air fryer and let it rest for 5 minutes before slicing.