Preheat the oven to 425°F.
In a bowl, combine olive oil, minced garlic, ground cumin, ground coriander, paprika, salt, and pepper to create the marinade.
Add the chicken breast to the marinade, ensuring it is evenly coated. Let it sit for at least 15 minutes.
Chop the bell pepper, red onion, and zucchini. Toss the vegetables with a little olive oil, salt, and pepper.
Place the marinated chicken and vegetables on a baking sheet. Roast in the preheated oven for 20-25 minutes, or until the chicken is cooked through and the vegetables are tender and slightly charred.
While the chicken and vegetables are roasting, prepare 1/2 cup of cooked quinoa if not already done.
Assemble the bowl by placing mixed greens at the base, then add quinoa, roasted vegetables, and sliced chicken breast on top.
Drizzle any remaining juices over the bowl and serve warm.