Combine all of the spices in a small bowl (sumac, ground cumin, paprika, ground cinnamon, allspice and sea salt) and stir until incorporated.

Pat the chicken dry with a paper towel and place chicken thighs (or breasts) in a large zip lock bag (or freezer bag) and add the olive oil, lemon zest, lemon juice, and the spice blend. Seal the bag and shake everything around until all of the thighs are well-coated in the marinade.

Either refrigerate for 15 minutes (up to 24 hours) to marinate, or cook the chicken immediately. For the best results, marinate the chicken for at least 15 minutes. If you don't have time to marinate the chicken, you can toss all of the ingredients in a mixing bowl and toss it all together using your hands.

Lightly spray the air fryer basket with cooking spray. Preheat the air fryer to 375 degrees for a few minutes.

Place the chicken thighs in the air fryer with the rounded side down in a single layer (do this in two batches if your air fryer is too small to fit the thighs in one layer). Air fry for 14 minutes.

Flip the chicken and air fry for an additional 4 to 6 minutes, until the thighs are crispy and cooked through.

For chicken breasts, air fry at 350 for 9 minutes per side. For bone-in chicken thighs, air fry at 375 for 10 minutes per side. 

Chicken is considered fully cooked once it reaches an internal temperature of 165 degrees F. To verify the temperature, insert an instant read thermometer into the thickest part of the thigh (I choose the largest thigh to test) and wait until the numbers stop moving to get an accurate read. A meat thermometer is the best way of ensuring the chicken thighs turn out perfectly cooked for a delicious meal.

Serve Crispy Mediterranean Chicken with your choice of side dishes and enjoy!