01 - Whisk together olive oil, lemon juice, garlic, cumin, coriander, paprika, turmeric, cinnamon, cayenne, salt, and pepper in a large bowl until thoroughly combined.
02 - Add chicken thighs to the bowl, turning to coat thoroughly with the marinade. Cover and refrigerate for at least 1 hour, or up to overnight for optimal flavor development.
03 - Preheat oven to 425°F, or heat a grill pan over medium-high heat.
04 - Arrange marinated chicken on a foil-lined baking sheet or grill pan. Roast or grill for 18-20 minutes, turning once, until cooked through and slightly charred.
05 - Let chicken rest for 5 minutes to retain juices, then slice thinly against the grain.
06 - Combine yogurt or tahini, minced garlic, lemon juice, and salt. Add water gradually until the sauce reaches a drizzle-able consistency.
07 - Warm pita breads, then fill with lettuce, tomatoes, cucumber, red onion, and pickles. Add sliced chicken generously and drizzle with sauce. Roll or fold and serve immediately.