Preheat your oven to 400°F.
Pat the chicken breast dry and season both sides with salt, pepper, and ground cinnamon. Optionally, rub a tiny amount of olive oil on the chicken for extra moisture.
Place the seasoned chicken breast on a baking sheet and roast in the oven for about 20-25 minutes, or until fully cooked and the internal temperature reaches 165°F.
While the chicken is roasting, peel and dice the sweet potato into small cubes. Steam or microwave until just tender, about 5-7 minutes.
In a non-stick skillet, heat the remaining olive oil over medium heat. Add the diced sweet potato and sauté until they begin to brown and crisp up, about 5 minutes. Season lightly with salt and pepper.
Trim the ends of the green beans. Blanch them in boiling water for 2-3 minutes, then drain and shock in ice water to preserve their vibrant color. Pat them dry.
In the same skillet or a separate one, sauté the green beans over medium-high heat for an additional 2-3 minutes until they are crispy but still tender. Season with salt and pepper.
Plate the roasted chicken breast alongside a serving of sweet potato hash and crispy green beans. Enjoy the blend of warm spices and fresh vegetables.