Preheat oven to 450F or 425F convection. Line a baking sheet with parchment paper.
Add carrots, chickpeas, and onion (if using) to the baking sheet. Toss with the oil and salt. Bake for 20-25 minutes, or until charred and tender.
Meanwhile, add all of your dressing ingredients to a jar with a lid and shake vigorously to combine (alternatively you can whisk it in a bowl, but it won’t emulsify as well).
Add kale to a large bowl along with ¼ cup of the dressing. Use your hands to massage the dressing into the kale.
Add the warm carrots, chickpeas, and onion to the bowl along with about ¼ cup more dressing and toss to coat. Taste and add more dressing, if needed (save any leftover dressing for drizzling over leftovers). Serve topped with toasted nuts or seeds and fresh herbs (if using).