Preheat your oven to 425°F (220°C).
Trim any excess fat from the chicken breast. Pat dry with paper towels.
Cut the sweet potato into 1/2-inch cubes for even roasting. Wash and trim the green beans.
In a bowl, toss the sweet potato cubes with half a teaspoon of olive oil, salt, and pepper.
Spread the sweet potato on a baking sheet lined with parchment paper and roast in the preheated oven for about 20 minutes, until they start to become tender.
While the sweet potatoes are roasting, season the chicken breast with salt and pepper. Heat a non-stick skillet over medium-high heat with a drizzle of olive oil.
Sear the chicken breast for 2-3 minutes on each side until lightly browned, then transfer to the oven on another baking sheet lined with parchment paper. Roast for approximately 12-15 minutes or until the internal temperature reaches 165°F.
During the last 10 minutes of chicken roasting, add the green beans to the oven on a separate tray or alongside the sweet potatoes if space allows. Toss them with a pinch of salt and a drizzle of olive oil.
Once everything is roasted to perfection, plate the chicken breast, crispy roasted sweet potato cubes, and green beans. Serve warm and enjoy your balanced, nutritious meal.