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 a diagonal; cut the chicken breast into uniform 1-inch cubes.
In a large mixing bowl, whisk together the extra virgin olive oil, maple syrup, sea salt, black pepper, and garlic powder until well combined.
Add the carrots and chicken cubes to the bowl and toss thoroughly until every piece is evenly coated in the maple glaze.
Spread the mixture onto the prepared baking sheet in a single layer, ensuring the pieces are spaced out to allow for proper roasting.
Place in the oven and roast for 20 to 25 minutes, tossing the ingredients halfway through the cooking time.
During the final 5 minutes of roasting, sprinkle the pecans onto the baking sheet to allow them to become fragrant and toasted.
Remove from the oven once the chicken is cooked through and the carrots are fork-tender, then garnish with fresh thyme before serving.