Preheat your oven to 400°F.
Pat the chicken breast dry with paper towels. Brush lightly with olive oil.
In a small bowl, mix almond flour with salt, pepper, and garlic powder. Dredge the chicken breast in the almond flour mixture, ensuring a light coating on all sides.
Place the chicken on a baking sheet lined with parchment paper.
Cut the sweet potato into 1/2-inch thick rounds or cubes. Toss with a pinch of salt, pepper, and a drizzle of olive oil on a separate baking sheet.
Trim the ends of the green beans and place them on the same sheet as the sweet potatoes or a separate one, tossing lightly with salt and pepper.
Place both baking sheets in the oven. Roast the sweet potatoes and green beans for about 20-25 minutes, stirring halfway through until tender and lightly browned.
Bake the coated chicken for approximately 20-25 minutes until it reaches an internal temperature of 165°F and shows a crispy exterior.
Remove all items from the oven. Let the chicken rest for a few minutes before slicing.
Serve the chicken alongside the roasted sweet potatoes and green beans, and enjoy your balanced meal.