Preheat oven to 400°F and line a large baking sheet with parchment paper.
Peel and dice the sweet potato into half-inch cubes, chop the broccoli into small florets, and slice the bell pepper into strips.
Place the chicken breast and all the prepared vegetables onto the baking sheet in a single layer.
Drizzle the extra virgin olive oil over the chicken and vegetables.
Sprinkle the dried oregano, dried thyme, garlic powder, sea salt, and black pepper evenly over everything.
Toss the vegetables with your hands or tongs to coat them thoroughly, and rub the seasoning onto both sides of the chicken.
Roast in the oven for 20 to 25 minutes, or until the chicken is cooked through and the vegetables are tender and slightly browned.
Let the chicken rest for 5 minutes before slicing it into strips to serve alongside the roasted vegetables.