Grate or finely chop the remaining 4 cloves of garlic into a large bowl. Stir in 1 cup of greek yogurt, the juice of two lemons, 1 Tbsp olive oil, 3 tsp kosher salt, 1 Tbsp smoke paprika, 1 Tbsp cumin, 1/2 tsp cinnamon, and 1/4 tsp cayenne pepper, and whisk until well combined.
Add the chicken thighs to the marinade, turning to coat each piece evenly. Allow to sit at room temp up to 30 minutes, until ready to grill. You can also marinate this in the fridge for up to 6 hours.
Preheat a grill to medium heat, and lightly oil the grates. Using tongs, place the chicken thighs on the hot grates, rotating as needed to balance out hot spots. The chicken wants to be 165 degrees, which should take 5-6 minutes a side.
When through cooking the chicken, quickly grill the pita breads to get some grill marks and heat through.
To assemble, using a warm pita as the base, build a pile of thinly sliced chicken, pickled red onions, yogurt sauce, and a few leaves of parsley and torn fresh mint. Roll 'em up and enjoy with LOTS of napkins!!