Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Dice the sweet potato and carrots into small, uniform half-inch cubes to ensure they roast at the same rate as the chicken.
In a small bowl, whisk together the extra virgin olive oil, minced garlic, rosemary, thyme, salt, and pepper.
Arrange the chicken breast, sweet potato cubes, carrots, bell peppers, and broccoli florets in a single layer on the prepared baking sheet.
Drizzle the garlic-herb oil mixture over the chicken and vegetables, using your hands or a spatula to toss until everything is well coated.
Roast in the center of the oven for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender.
Remove from the oven and let the chicken rest for 5 minutes before slicing to ensure the meat remains moist and flavorful.