01 - Preheat the oven to 400°F. Position the rack in the center.
02 - In a large bowl, combine olive oil, sumac, cumin, smoked paprika, coriander, salt, and black pepper. Whisk until a smooth paste forms.
03 - Add the chicken thighs to the bowl and turn to coat evenly, ensuring the spice mixture covers all surfaces and gets under the skin.
04 - Spread the sliced carrots, drained chickpeas, red onion, and minced garlic in a roasting pan or large baking dish. Drizzle lightly with additional olive oil, season with a pinch of salt, and toss to combine.
05 - Place the seasoned chicken thighs skin-side up on top of the vegetable mixture, allowing the juices to baste the vegetables as they roast.
06 - Roast for 40–45 minutes until the chicken skin is golden and crisp, the internal temperature reaches 165°F, and the carrots are fork-tender.
07 - Remove from the oven, scatter chopped fresh parsley over the dish, and serve with lemon wedges for squeezing over the top.