Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Peel and dice the sweet potato into 1/2-inch cubes and slice the carrots into 1/4-inch thick rounds.
Cut the chicken breast into bite-sized pieces, ensuring they are uniform for even cooking.
In a large mixing bowl, combine the extra virgin olive oil, dried rosemary, dried thyme, garlic powder, sea salt, and black pepper.
Add the chicken, sweet potato cubes, and carrot rounds to the bowl and toss thoroughly until everything is well-coated in the herb oil.
Spread the mixture onto the prepared baking sheet in a single layer, ensuring the pieces aren't crowded so they roast rather than steam.
Roast for 20-25 minutes, tossing halfway through, until the chicken is cooked through and the vegetables are tender and golden brown.