Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Peel and chop the carrots and sweet potatoes into uniform 1-inch cubes, and slice the red onion into thick wedges.
In a large mixing bowl, combine the chicken breast and all the prepared vegetables.
Drizzle the olive oil over the chicken and vegetables, then sprinkle evenly with turmeric, rosemary, thyme, garlic powder, sea salt, and black pepper.
Toss everything thoroughly until the chicken and vegetables are well-coated in the golden spice mixture.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the chicken is not covered by the vegetables.
Roast for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the root vegetables are tender and slightly caramelized.
Remove from the oven and let the chicken rest for 5 minutes before slicing it into strips to serve alongside the roasted vegetables.