Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper.
Slice the carrots into 1/2-inch rounds and halve the Brussels sprouts, removing any tough outer leaves.
Cut the chicken breast into even 1-inch cubes to ensure they cook at the same rate as the vegetables.
In a large mixing bowl, whisk together the olive oil, turmeric, rosemary, thyme, garlic powder, sea salt, and black pepper.
Add the chicken, carrots, and Brussels sprouts to the bowl and toss thoroughly until every piece is coated in the golden spice mixture.
Spread the mixture in a single layer on the prepared sheet pan, ensuring enough space between pieces for roasting rather than steaming.
Roast for 20-25 minutes, tossing halfway through, until the chicken is cooked through and the vegetables are tender and slightly charred.
Remove from the oven and let rest for 2 minutes before serving to keep the chicken juicy.