Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Peel the sweet potato and cut it into half-inch cubes, then slice the red bell pepper into thick strips.
Place the chicken breast, cubed sweet potatoes, broccoli florets, and bell pepper strips onto the prepared baking sheet.
Drizzle the extra virgin olive oil over the chicken and vegetables, ensuring everything is lightly coated.
Sprinkle the dried rosemary, thyme, garlic powder, sea salt, and black pepper evenly across the pan.
Toss the ingredients with your hands or tongs to distribute the herbs and oil, then spread them out into a single layer.
Roast in the center of the oven for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender.
Allow the chicken to rest for 5 minutes before slicing it against the grain to serve with the roasted vegetables.