Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Peel the sweet potato and carrot, then chop them into uniform 1-inch cubes to ensure they cook evenly.
Mince the garlic cloves finely.
In a large mixing bowl, combine the chicken breast, cubed sweet potato, and sliced carrots.
Drizzle with extra virgin olive oil and add the minced garlic, dried rosemary, dried thyme, sea salt, and black pepper.
Toss everything together until the chicken and vegetables are thoroughly and evenly coated with the oil and spices.
Spread the mixture in a single layer on the prepared baking sheet, making sure not to overcrowd the pan.
Roast for 25 to 30 minutes, or until the chicken is cooked through and the vegetables are tender and slightly caramelized.
Remove from the oven and let the chicken rest for 5 minutes before slicing to ensure it stays juicy.
Serve the sliced chicken alongside the roasted root vegetables.