In a large bowl, coarsely mash the chickpeas with a fork. Keep aside.
In a small skillet, heat the oil. Add the onions and green chilies and saute for 2 minutes till soft.
Add the ginger and garlic paste and fry again till the raw smell goes, about 1 minute.
Stir in the turmeric, garam masala and coriander powders and saute for a minute more.