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