First pat dry the chicken and transfer to a big deep bowl, add salt, kashmiri chilli, mustard oil, lime juice and ginger & garlic paste.
Mix well so the chicken pieces are coated with spices.Cling film the bowl and let the marinate rest for at least an hour
Heat a grill pan on a high flame, sprinkle some oil on the hot pan and grill the chicken till it is done.
Avoid flipping too many times, as it distorts the texture of the chicken pieces. Once cooked and grilled well, then flip over to the other side, if required. Remove and keep aside.