Cook Lentils and Vegetables: Rinse and soak lentils. Cook with pumpkin, eggplant, tomatoes, and water until tender. Blend into a puree.
Marinate Chicken: Combine chicken with yogurt, turmeric, salt, and chili powder. Marinate for 30 minutes.
Cook Aromatics: Sauté onions until golden. Add garlic, ginger, and green chilies. Cook until fragrant.
Brown Chicken: Add marinated chicken and cook until lightly browned.
Combine and Simmer: Stir in lentil puree, tamarind paste, and spices. Simmer for 30-40 minutes until chicken is tender.
Garnish and Serve: Stir in cilantro and serve with brown rice or naan.