Preheat your oven to 425°F (220°C).
Trim any excess fat from the chicken breast and pat dry with paper towels. Season lightly with salt and pepper.
In a small bowl, mix the maple syrup with a pinch of salt and pepper to create the glaze.
Place the chicken breast on a baking sheet lined with parchment paper. Brush the maple glaze evenly over the top of the chicken.
Peel and cube the sweet potato into evenly sized pieces. Toss with a dash of olive oil, salt, and pepper.
Halve the Brussels sprouts, removing any damaged outer leaves, and toss with the olive oil, salt, and pepper.
Arrange the sweet potato cubes and Brussels sprouts around the chicken on the baking sheet.
Roast in the preheated oven for approximately 20-25 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and the vegetables are tender and slightly crispy.
Once cooked, remove from the oven and let rest for a few minutes before serving.