01 - Set oven to 425°F. Line a large sheet pan with parchment paper or foil for easy cleanup.
02 - In a large bowl, whisk together harissa paste, olive oil, lemon juice, garlic, cumin, smoked paprika, salt, and black pepper.
03 - Pat chicken thighs dry and add to the marinade bowl. Toss thoroughly to coat each piece.
04 - Add chickpeas, red onion, bell pepper, and zucchini to the bowl. Toss well to combine and evenly coat with marinade.
05 - Place chicken thighs skin-side up and spread vegetables evenly on the prepared sheet pan.
06 - Roast in preheated oven for 30 to 35 minutes until chicken reaches an internal temperature of 165°F and vegetables are tender and golden.
07 - Broil for 2 to 3 minutes to crisp the chicken skin if desired.
08 - Remove from oven, sprinkle with chopped cilantro or parsley, and serve with lemon wedges.