Preheat your oven to 400°F and line a large sheet pan with parchment paper for easy cleanup.
Mince the garlic cloves and finely chop the fresh rosemary and thyme.
In a small bowl, whisk together the olive oil, minced garlic, rosemary, thyme, sea salt, and black pepper.
Place the chicken breast on one side of the prepared sheet pan and arrange the broccoli, sliced bell peppers, and carrots on the other side.
Drizzle the garlic-herb oil over the chicken and vegetables, using your hands or a brush to ensure the chicken is well-coated and the vegetables are tossed evenly.
Roast in the oven for 20 to 25 minutes until the chicken is cooked through to an internal temperature of 165°F and the vegetables are tender with slightly browned edges.
Remove from the oven and let the chicken rest for 5 minutes before slicing to maintain its juiciness, then serve immediately with the roasted vegetables.