Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Peel the carrots and slice them into 1/2-inch thick rounds.
In a small bowl, whisk together the maple syrup, Dijon mustard, garlic powder, and half of the olive oil.
Place the carrots on the prepared baking sheet and toss with half of the maple-dijon mixture and a pinch of sea salt.
Season the chicken breast on both sides with the remaining sea salt and black pepper.
Heat the remaining olive oil in an oven-safe skillet over medium-high heat.
Sear the chicken breast for 3 minutes per side until a golden crust forms, then brush the top with the remaining maple-dijon glaze.
Place both the baking sheet of carrots and the skillet with chicken into the oven.
Roast for 15-18 minutes until the carrots are tender and the chicken reaches an internal temperature of 165°F.
Let the chicken rest for 5 minutes before slicing and serve alongside the carrots, garnished with freshly chopped parsley.