Mix together the yogurt, cilantro, garlic, cumin, salt, curry powder and chili. Season to taste with pepper. Add the chicken pieecs, stir to mix well, cover and refrigerate for 6 to 8 hours or overnight.

Lift the chicken from the marinade, wipe off the excess, and thread onto metal skewers.

Spray the grilling grate of a gas or charcoal grill with vegetable oil spray. Preheat the grill to medium hot.

Season the kebabs with salt and pepper and grill for about 4 minutes per side, or until cooked through. Serve immediately.