Preheat your oven to 425°F.
Peel (if desired) and cut the sweet potato into 1/2-inch cubes. Toss with 1 tsp olive oil, salt, pepper, and a pinch of garlic powder. Spread the cubes out on a baking sheet.
Trim the ends off the green beans. Toss them with a drizzle of olive oil, salt, and pepper, and place them on a separate part of the baking sheet or a different sheet.
Roast the sweet potato and green beans in the oven for about 20-25 minutes, stirring once halfway through, until tender and lightly crispy.
While the vegetables roast, season the chicken breast with salt, pepper, and garlic powder. Heat a non-stick skillet over medium-high heat and add the remaining 1 tsp olive oil.
Place the chicken in the skillet and cook for about 5-6 minutes per side or until the chicken is cooked through and has a crispy exterior.
Once everything is cooked, slice the chicken into strips. Combine the chicken, roasted sweet potatoes, and green beans in the skillet or a serving dish, and toss gently to mix the flavors.
Serve immediately and enjoy your balanced, crispy skillet meal.