Place the onion, garlic, ginger, sweet potatoes, carrots, bell pepper, zucchini, and chickpeas in the slow cooker.
In a bowl, whisk together the coconut milk, vegetable broth, curry paste, soy sauce, brown sugar, and lime juice until smooth.
Pour the coconut mixture over the vegetables and chickpeas. Stir gently to combine.
Season with salt and black pepper.
Cover and cook on low for 6 to 7 hours, until the sweet potatoes and carrots are tender.
Taste and adjust seasoning if needed.
Serve hot over jasmine rice and top with chopped cilantro.