Tandoori chicken lettuce cups are a light and flavorful option for a healthy meal or appetizer. Start by marinating the chicken in a mixture of yogurt, lemon juice, and spices like cumin, coriander, and turmeric. Grill the chicken until cooked through and then dice it into small pieces. Take large lettuce leaves, such as butter lettuce or iceberg lettuce, and fill them with the tandoori chicken, sliced cucumber, red onion, and a drizzle of mint yogurt sauce. These lettuce cups are not only delicious but also low in calories and high in protein.