Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Peel and slice the carrots into thin rounds, chop the broccoli into bite-sized florets, and dice the red bell pepper.
Mince the garlic cloves finely and set aside.
Place the chicken breast in the center of the baking sheet and arrange the vegetables around it in a single layer.
Drizzle the olive oil over the chicken and the vegetables, ensuring everything is lightly coated.
Sprinkle the minced garlic, dried rosemary, dried thyme, sea salt, and black pepper evenly over the entire tray.
Toss the vegetables with your hands or tongs to distribute the seasonings, and rub the spices into the chicken.
Roast in 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 it into strips to serve alongside the roasted vegetables.