01 - Preheat the oven to 400°F.
02 - In a large mixing bowl, combine the olive oil, sumac, cumin, smoked paprika, coriander, kosher salt, and black pepper. Stir until a smooth paste forms.
03 - Add the chicken thighs to the bowl and turn to coat each piece thoroughly in the spice mixture, ensuring the skin is evenly covered.
04 - Scatter the sliced carrots, drained chickpeas, red onion, and minced garlic across the bottom of a roasting pan or large baking dish. Drizzle lightly with olive oil, sprinkle with a pinch of salt, and toss to combine.
05 - Place the seasoned chicken thighs skin-side up on top of the vegetables in a single layer.
06 - Transfer to the oven and roast for 40 to 45 minutes, until the chicken skin is deeply golden and crisp and the internal temperature reaches 165°F. The carrots should be tender and the chickpeas slightly caramelized.
07 - Remove from the oven, scatter the chopped parsley over the dish, and serve immediately with lemon wedges alongside.