Preheat your oven to 425°F.
Slice bell peppers, zucchini, and red onion into bite-sized pieces. Toss them in olive oil, salt, pepper, and a pinch of turmeric.
Spread the vegetables on a baking sheet and roast in the oven for 20-25 minutes until tender and slightly caramelized.
Meanwhile, season the chicken breast with cumin, paprika, garlic powder, salt, and pepper.
Sear the chicken in a hot skillet over medium-high heat for 2-3 minutes per side until golden, then finish cooking in the oven for 8-10 minutes until the internal temperature reaches 165°F.
Prepare the cooked quinoa according to package directions if not pre-cooked.
Slice the chicken into strips. In a bowl, assemble the quinoa, roasted vegetables, and chicken strips.
Drizzle with lemon juice and a light sprinkle of additional herbs if desired. Serve warm.