Prep the chicken: If your chicken breasts are very thick, slice them horizontally into cutlets or pound them to an even 3/4–1-inch thickness. This helps them cook evenly and stay juicy.
Make the marinade: In a bowl, combine olive oil, lemon zest, 1–2 tablespoons lemon juice, garlic, oregano, thyme, parsley, paprika, salt, and pepper.
Stir into a loose paste.
Coat the chicken: Add the chicken to the bowl and toss until fully coated. Let it sit for 10–15 minutes on the counter while the air fryer preheats. If you have more time, refrigerate for up to 2 hours for deeper flavor.
Preheat the air fryer: Heat to 380°F (193°C) for 3–5 minutes.
Lightly spray the basket with cooking spray to prevent sticking.
Arrange and cook: Place the chicken in a single layer with some space between pieces. Air fry for 8–10 minutes, then flip and cook another 5–8 minutes, depending on thickness.
Check for doneness: Use an instant-read thermometer. The thickest part should reach 165°F (74°C).
If not there yet, cook 1–2 minutes more and recheck.
Rest and finish: Transfer to a plate and rest 5 minutes. Squeeze on a little extra lemon juice and sprinkle fresh parsley if you like.
Serve: Pair with rice, couscous, roasted potatoes, a green salad, or steamed veggies. Spoon any juices over the top for extra flavor.