Marinated in spiced yoghurt, Kashmiri chillies, and garlic, then roasted over roaring tandoor charcoal embers with charred edges.
Toss the chicken with lemon juice, salt, and half the ginger-garlic paste; rest 20 minutes.
Coat in a mix of yogurt, tandoori masala, Kashmiri chili powder, turmeric, remaining ginger-garlic paste, and 1 tbsp mustard oil; refrigerate 4 hours.
Thread the cubes onto skewers, leaving small gaps.
Cook over high charcoal heat or under a hot grill, basting with the remaining oil and turning.
Grill until charred at the edges and cooked through.
Serve with onion rings, lemon wedges, and mint chutney.