Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Wash and peel the sweet potato and carrots, then dice them into uniform 1/2-inch cubes to ensure even roasting.
Mince the garlic cloves finely and set aside.
In a large mixing bowl, combine the chicken breast, diced sweet potato, and carrots.
Drizzle with extra virgin olive oil and sprinkle with minced garlic, rosemary, thyme, sea salt, and black pepper.
Toss everything together until the chicken and vegetables are thoroughly and evenly coated with the oil and seasonings.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the pieces are not overcrowded.
Roast in the center of the oven for 20 to 25 minutes, or until the chicken is cooked through to an internal temperature of 165°F and the vegetables are tender and slightly caramelized.
Remove from the oven and let the chicken rest for 5 minutes before slicing to keep the meat juicy.