01 - Preheat oven to 400°F. Line a large baking sheet or roasting pan with parchment paper or lightly grease it.
02 - In a large mixing bowl, whisk together the olive oil, sumac, cumin, smoked paprika, coriander, salt, black pepper, and lemon juice until well combined.
03 - Add the chicken thighs to the bowl and toss thoroughly to coat each piece evenly in the spice mixture. Let rest at room temperature for 10 minutes for deeper flavor penetration.
04 - Spread the carrot sticks, sliced red onion, chickpeas, and minced garlic across the prepared baking sheet. Drizzle with a touch of olive oil and toss to coat.
05 - Nestle the marinated chicken thighs skin-side up on top of the vegetables and chickpeas, spacing them evenly.
06 - Roast for 35 to 40 minutes, until the chicken skin is golden and crisp, the internal temperature reaches 165°F, and the vegetables are tender.
07 - Remove from the oven and sprinkle with chopped fresh parsley. Serve hot alongside rice, warm flatbread, or a crisp green salad.