Place the chicken breasts between two pieces of plastic wrap or in a zip-top bag. Use a meat mallet or rolling pin to gently pound them to an even thickness (about 1 inch) for uniform cooking.
In a mixing bowl, combine the olive oil, lemon juice, oregano, garlic powder, onion powder, paprika, salt, and pepper. Mix well to form a marinade.
Add the chicken breasts to the marinade, ensuring they are well coated. Cover the bowl with plastic wrap or seal the bag. Marinate in the refrigerator for at least 15 minutes, or up to 2 hours for more flavor.
Preheat your air fryer to 380°F (190°C) for about 3-5 minutes.
Remove the chicken from the marinade and let any excess marinade drip off. Place the chicken breasts in the air fryer basket in a single layer. Cook for 10 minutes.
After 10 minutes, flip the chicken breasts over and cook for an additional 8-10 minutes, or until the internal temperature reaches 165°F (75°C) and the juices run clear.
Once cooked, remove the chicken from the air fryer and let it rest for about 5 minutes. Garnish with fresh parsley if desired.
For extra flavor, consider adding fresh herbs like thyme or rosemary to the marinade.
Ensure not to overcrowd the air fryer basket to prevent uneven cooking.
Store any leftovers in the refrigerator for later use in salads, wraps, or meal prep.