Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Peel and dice the sweet potato into 1-inch cubes and slice the carrots into 1/2-inch rounds.
Mince the garlic cloves finely.
In a large mixing bowl, combine the chicken breast, diced sweet potato, and sliced carrots.
Drizzle with olive oil and sprinkle with the minced garlic, rosemary, thyme, sea salt, and black pepper.
Toss everything thoroughly until the chicken and vegetables are evenly coated with the oil and seasonings.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the pieces aren't overcrowded.
Roast in the oven for 25-30 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender and lightly caramelized.
Remove from the oven and let the chicken rest for 5 minutes before slicing into strips and serving alongside the roasted vegetables.