Marinate the chicken with all the items given under chicken marination.
Mix well and keep it aside.
Grind palak leaves a handful , green chillies to a fine paste.
Add the palak paste to gram flour along with salt, gram masala and chaat masala.
Mix well to a smooth and thick batter.
Drop the chicken pieces in the green batter and coat it well on all sides.
Roll it over the rusk powder/ bread crumbs.
Prepare all the chicken pieces the same way.
Freeze the pieces for an hour.
Take out and deep fry each piece in medium hot oil until golden crisp.
Serve hot with tomato sauce.