Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Peel and chop the carrots, parsnips, and red potato into uniform 1-inch cubes to ensure they cook at the same rate.
Mince the garlic cloves and finely chop the fresh rosemary and thyme leaves.
In a large mixing bowl, combine the cubed vegetables and the chicken breast.
Drizzle with extra virgin olive oil and sprinkle with the minced garlic, chopped herbs, sea salt, and black pepper.
Toss everything thoroughly until the chicken and vegetables are evenly coated in oil and seasonings.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the chicken breast has a little space around it.
Roast for 25-30 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are golden-brown and tender.
Remove from the oven and let the chicken rest for 5 minutes before slicing to retain its juices.