In a mixing bowl add yogurt, ginger garlic paste, a Teaspoon each of salt and black pepper powder and a Teaspoon of oil. Mix them well with a spoon.
Now add the washed chicken pieces and mix everything with your hand.
Keep in the refrigerator for at least 2 hours.
Heat the remaining oil in a pan.
Saute the crushed garlic. Keep the flame low here because we dont want to brown them.
Add the onion slices with some salt. Fry for 3 minutes.
Then add marinated chicken pieces along with the marination. Cook for 5 minutes.
Cover the lid and cook for 15 minutes on medium flame.
Chicken will realese lot of water. So cook for another 10 minutes without the lid.
When the gravy will become thick add the green chilies, some salt, sugar and pepper powder. Mix well and turn off the heat.
Add some more pepper powder for extra kick.