Add the chickpeas, diced tomatoes, carrots, zucchini, red bell pepper, onion, and garlic to the slow cooker.
Pour in the vegetable broth, then stir in the cumin, coriander, cinnamon, turmeric, and dried apricots. Season with salt and pepper.
Cover and cook on low for 6 to 8 hours until the vegetables are tender.
Serve the tagine over cooked couscous and top with fresh cilantro and a squeeze of lemon.