Soak chickpeas in enough cold water to cover them by 2 inches for 6 hours or overnight. (Alternatively, use the quick-soak method: Place beans in a large pot with enough water to cover by 2 inches. Bring to a boil over high heat. Remove from heat and let stand for 1 hour.) Drain when ready to use.
Combine the soaked chickpeas, squash, carrots, onion, lentils, broth, tomato paste, ginger, cumin, salt, saffron and pepper in a 6-quart slow cooker.
Put on the lid and cook on low until the chickpeas are tender and the lentils have begun to break down, 5 to 6 1/2 hours.
Stir in lime juice. Serve sprinkled with peanuts and cilantro.
Ingredient note: Kabocha is a squash with a green-streaked rind and tender, sweet orange flesh. An average kabocha weighs two to three pounds.Considered the world's most expensive spice, saffron contributes a pungent flavor and intense yellow color. It is sold in threads and powdered form.