Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Slice the carrots into thin rounds, chop the zucchini into half-moons, and dice the red bell pepper into bite-sized pieces.
Place the chicken breast in the center of the baking sheet and arrange the vegetables in a single layer around it.
Whisk together the extra virgin olive oil, lemon juice, chopped rosemary, and thyme in a small bowl.
Drizzle the herb mixture evenly over the chicken and vegetables, then season everything with sea salt and black pepper.
Toss the vegetables gently with tongs to ensure they are well-coated in the oil and herbs.
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-crisp.
Remove from the oven and let the chicken rest for 5 minutes before slicing to keep it juicy.
Serve the sliced chicken alongside the roasted vegetables, drizzling any remaining pan juices over the top.