Black pepper chicken

Onion- 1
Green chili - 4
Ginger garlic paste - 1 tbsp
Black pepper pwd- 1 tsp
Chicken -1/2 kg
Curd - 1/2 cup
Cumin - 1 tsp
Coriander - 1 tsp
Salt - as per taste
Oil - 1 cup
Coriander leave
1 inch ginger