Wash the chicken drumstick, make some slashes and pat dry with kitchen towel.
In a mixing bowl add the chicken drumsticks, 1 tbsp oil and remaining ingredients and mix them thoroughly. Keep them marinated for sometime. The longer the better.
Preheat oven to 250° for 10 mins. Grease the grill tray. Lay the drumsticks in single layer without sticking to each other.
Grill them for 20 mins. Flip over and smear them with oil every 5 mins.
Reduce the temperature to 200° and grill for 5 more mins.
Garnish with onion rings, slit green chillies and lemon slices.