Preheat oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Slice the carrots into one-inch diagonals and cut the chicken breast into even bite-sized pieces.
In a large mixing bowl, whisk together the olive oil, maple syrup, garlic powder, sea salt, and black pepper.
Add the chicken and carrots to the bowl, tossing thoroughly until every piece is evenly coated in the glaze.
Spread the mixture onto the baking sheet in a single layer, ensuring space between pieces for optimal caramelization.
Roast for 20 to 25 minutes, tossing halfway through, until the chicken reaches an internal temperature of 165°F and the carrots are tender.
Sprinkle with fresh chopped rosemary and serve warm.