Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Cut the sweet potato into 1/2-inch cubes, chop the broccoli into bite-sized florets, and slice the red bell pepper into strips.
Slice the chicken breast into even 1-inch thick strips to ensure they cook at the same rate as the vegetables.
In a large mixing bowl, combine the chicken, sweet potato, broccoli, and bell peppers.
Drizzle with extra virgin olive oil and sprinkle with dried rosemary, dried thyme, garlic powder, sea salt, and black pepper.
Toss thoroughly until everything is evenly coated in the oil and savory herb mixture.
Spread the mixture in a single layer on the prepared baking sheet, ensuring nothing is overcrowded.
Roast for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the sweet potatoes are fork-tender.
Remove from the oven and let rest for 5 minutes before serving to keep the chicken juicy.