To a large bowl, add the ground beef, crumbled feta, garlic, olive oil, all the spices and parsley and mix together with your hands until combined. Form 8 equal half moon shaped thin 'patties'. Cut the pitas in half, fill with the meat patties and spread out evenly.
Preheat a skillet over medium heat and add in a drizzle of olive oil. Cook the arayes for 4-5 minutes per side, or until the meat is cooked through. Don't forget to sear the open meat side too! Make sure to keep the heat on medium or medium low.