Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Peel and dice the sweet potato and carrots into 1/2-inch cubes, and halve the Brussels sprouts.
Slice the chicken breast into even 1-inch strips to ensure they cook at the same rate as the vegetables.
In a large mixing bowl, combine the chicken, sweet potato, carrots, and Brussels sprouts.
Drizzle with olive oil and sprinkle with sea salt, black pepper, rosemary, garlic powder, and turmeric.
Toss everything thoroughly until the chicken and vegetables are evenly coated in the golden spice mixture.
Spread the mixture in a single layer on the prepared baking sheet, ensuring no pieces are overlapping.
Roast for 22-25 minutes, tossing halfway through, until the chicken is cooked through and the vegetables are tender and slightly caramelized.