The Best Grilled Chicken Tikka (Tandoori Chicken)

0 Cut the chicken horizontally and vertically, but not all the way through the chicken. 
1 In a bowl, mix together the yogurt, olive oil, lemon juice, coriander, cumin, sumac, paprika, garlic powder, minced garlic, tandoori masala spice, Cheyenne pepper, and salt
2 Pour over the chicken and rub all over and inside all the indents. Marinate for 4 hours or overnight for the best flavor.
3 Grill or place on the middle rack in the oven and broil on high heat for about 13-15 minutes on each side,