Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Peel the carrots and slice them into 1/2-inch thick rounds on the diagonal to increase surface area for caramelization.
Cut the chicken breast into bite-sized 1-inch cubes to ensure they cook at the same rate as the carrots.
In a large mixing bowl, whisk together the olive oil, maple syrup, sea salt, black pepper, garlic powder, and dried thyme.
Add the chicken and carrots to the bowl and toss thoroughly until every piece is evenly coated in the glaze.
Spread the mixture onto the prepared baking sheet in a single layer, ensuring pieces are not overcrowded so they roast rather than steam.
Roast for 20 to 25 minutes, tossing halfway through, until the chicken reaches an internal temperature of 165°F and the carrots are tender with golden-brown edges.
Remove from the oven and let rest for 3 minutes before serving to allow the juices to redistribute.