Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Prep the vegetables by slicing the carrots into 1/4-inch rounds and chopping the red bell pepper into 1-inch pieces.
Mince the garlic cloves and finely chop the fresh rosemary and thyme leaves.
In a large mixing bowl, combine the chicken breast, broccoli, carrots, and bell peppers.
Drizzle with olive oil and add the minced garlic, rosemary, thyme, sea salt, and black pepper, tossing thoroughly to coat everything evenly.
Spread the chicken and vegetables in a single layer on the prepared baking sheet, ensuring they aren't overcrowded.
Roast for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are caramelized and tender.