Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Peel the sweet potato and cut it into 1-inch cubes, then chop the red bell pepper into bite-sized pieces.
Place the sweet potato cubes, red bell pepper, and broccoli florets on the baking sheet.
Drizzle the vegetables with half of the olive oil and sprinkle with half of the salt, pepper, garlic powder, and oregano.
Toss the vegetables to coat evenly and roast in the oven for 20 to 25 minutes until tender and slightly caramelized.
While the vegetables roast, season the chicken breast on both sides with the remaining salt, pepper, garlic powder, and oregano.
Heat the remaining olive oil in a large skillet over medium-high heat.
Place the chicken in the skillet and sear for 6 to 7 minutes per side until the exterior is golden brown and the internal temperature reaches 165°F.
Remove the chicken from the pan and let it rest for 3 minutes before slicing.
Serve the sliced chicken alongside the roasted vegetable medley for a clean and balanced meal.