Grease the air fryer basket lightly with olive oil and preheat the air fryer to 350°F.
Add the ground turkey, minced garlic, ground cumin, oregano, red onion, feta cheese, parsley, spinach, salt, and pepper to a medium sized mixing bowl and mix until fully combined.
Divide the mixture into 4 sections and roll each one into a ball, then flatten the ball to form a patty around 1 ½ inches thick. Repeat with the remaining meat to make 4 large patties of equal size.
Place the turkey burgers in the air fryer and cook for 8 minutes, then flip and cook another 4-5 minutes or until the internal temperature has reached 165℉.
Enjoy these turkey patties as a burger with a toasted bun, butter lettuce, cucumber slices, thinly sliced red onion, sliced tomato, and tzatziki.