Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper.
Slice the carrots into thin rounds and chop the red bell pepper into bite-sized pieces.
In a large bowl, toss the broccoli florets, carrots, and bell peppers with half of the olive oil, rosemary, thyme, and a pinch of salt and pepper.
Place the chicken breast on the prepared sheet pan and rub with the remaining olive oil, garlic powder, and herbs.
Arrange the seasoned vegetables in a single layer around the chicken on the sheet pan.
Roast for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender and slightly browned.
Remove from the oven and let the chicken rest for 5 minutes before slicing to ensure it stays moist.
Serve the sliced chicken alongside the roasted vegetables for a clean, nutrient-dense meal.