Preheat the oven to 180°C. Prick chicken drumsticks with a fork and put into a bow.
Add garlic paste, red chilli paste, cumin powder, coriander powder, salt, chaat masala, cinnamon powder and two teaspoons oil and mix well.
Keep the bowl in the refrigerator to marinate four to five hours.
Heat the remaining oil in a non-stick grill pan. Add the marinated chicken drumsticks and sear on high heat for four to five minutes.
Remove from heat and wrap the chicken drumsticks in an aluminum foil and place in the preheated oven. Bake for twenty to twenty-five minutes or till the chicken is fully cooked.