Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
In a small mixing bowl, whisk together the extra virgin olive oil, lemon juice, minced garlic, dried oregano, dried thyme, sea salt, and black pepper to create the marinade.
Place the chicken breast, broccoli florets, sliced carrots, and chopped bell peppers onto the prepared baking sheet.
Drizzle the lemon-herb marinade over the chicken and vegetables, using your hands or tongs to toss everything until thoroughly and evenly coated.
Arrange the chicken in the center of the tray and spread the vegetables out in a single layer around it to ensure even roasting.
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 with slightly caramelized edges.
Remove from the oven and let the chicken rest for 5 minutes before slicing to keep it juicy, then serve alongside the roasted vegetables.