01 - In a large mixing bowl, combine the yogurt, lemon juice, minced garlic, grated ginger, tandoori masala, ground cumin, ground coriander, chili powder, turmeric, garam masala, salt, and vegetable oil. Stir until a smooth, homogeneous paste forms.
02 - Using a sharp knife, make shallow slashes across each chicken piece to allow the marinade to penetrate. Add the chicken to the bowl and coat every piece thoroughly. Cover tightly and refrigerate for at least 4 hours, or preferably overnight for maximum flavor absorption.
03 - Preheat the oven to 430°F. Line a baking tray with aluminum foil and place a wire rack on top to ensure even heat circulation around the chicken.
04 - Arrange the marinated chicken pieces on the wire rack in a single layer. Bake for 25 to 30 minutes, turning the pieces halfway through, until the internal temperature reaches 165°F and the exterior is lightly charred.
05 - Remove the chicken from the oven and immediately brush with melted butter if desired. Garnish generously with fresh cilantro leaves and serve alongside lemon wedges.