01 - Make shallow diagonal slits across each chicken piece to allow the marinade to penetrate deeply into the meat.
02 - In a large mixing bowl, combine the yogurt, lemon juice, tandoori masala, ginger paste, garlic paste, ground cumin, ground coriander, paprika, turmeric, chili powder, salt, and vegetable oil. Stir until a smooth, uniform paste forms.
03 - Add the chicken pieces to the marinade, turning and rubbing thoroughly to coat every surface and slit. Cover the bowl tightly and refrigerate for at least 4 hours, ideally overnight for maximum flavor absorption.
04 - Preheat the oven to 425°F (220°C) with the rack positioned in the upper third. Alternatively, prepare a hot grill for direct high-heat cooking.
05 - Arrange the marinated chicken on a wire rack set over a rimmed baking sheet, or place directly on the grill grates. Roast for 30 to 35 minutes, turning once halfway through and basting with any remaining marinade, until the chicken is cooked through and lightly charred on the edges.
06 - Transfer the chicken to a serving platter, garnish with freshly chopped cilantro and lemon wedges, and serve immediately while hot.