Preheat your oven to 425°F.
In a small bowl, combine the shawarma spice mix ingredients such as cumin, paprika, garlic powder, and thyme.
Season the chicken breast evenly with the spice mix.
Place the seasoned chicken on a baking sheet and roast in the oven for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F.
Meanwhile, chop the red bell pepper, zucchini, and red onion into bite-size pieces.
Toss the vegetables with olive oil, salt, and pepper, and spread them on another baking sheet.
Roast the vegetables in the oven for 15-20 minutes until tender and slightly caramelized.
If not already prepared, cook quinoa according to package instructions.
Slice the roasted chicken and assemble the bowl by placing quinoa at the base, topping it with sliced chicken and roasted vegetables.
Drizzle with any remaining olive oil or a squeeze of lemon if desired, and serve warm.