Preheat your oven to 400°F (200°C) and line a rimmed baking sheet with parchment paper.
Peel the carrots and parsnips, then slice them into one-inch thick rounds or chunks.
In a medium bowl, toss the chopped root vegetables with half of the olive oil, half of the sea salt, and half of the black pepper.
Finely mince the garlic, rosemary, and thyme, then combine them in a small bowl with the remaining olive oil.
Rub the herb and garlic oil mixture evenly over all sides of the turkey breast.
Arrange the turkey breast and the seasoned vegetables in a single layer on the prepared baking sheet.
Roast for 25 to 30 minutes, or until the turkey reaches an internal temperature of 165°F and the vegetables are tender and browned.
Remove from the oven and let the turkey rest for 5 minutes before slicing to ensure the juices redistribute.