Oil grill and heat barbecue to medium. In a medium-size bowl, stir yogurt with seasonings. Open up thighs. Add to yogurt mixture and turn to coat.
Lay chicken flat on grill. Barbecue, covered, 4 minutes. Baste with any remaining yogurt mixture. Turn chicken and continue to barbecue, covered, until chicken feels springy when pressed, 4 to 6 more minutes. Place on a platter and sprinkle with coriander. Great with rice pilaf and sliced tomatoes.
Nutrition (per serving)
A spiced yogurt coating keeps chicken ultra-moist. Just dip and grill.