Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Cut the chicken breast into uniform 1-inch cubes and slice the carrot into thin rounds.
In a small glass bowl, combine the turmeric, garlic powder, onion powder, ginger powder, black pepper, and Celtic salt to create the anti-inflammatory seasoning blend.
Place the chicken pieces, broccoli florets, cauliflower florets, and carrot rounds onto the baking sheet.
Drizzle the avocado oil over the chicken and vegetables, then sprinkle the spice mixture evenly across the tray.
Toss everything thoroughly with tongs or clean hands until each piece is well-coated in the golden spices.
Spread the ingredients into a single layer, ensuring they aren't crowded so they roast rather than steam.
Roast for 20-25 minutes, tossing halfway through, until the chicken is cooked through and the vegetables are tender with slightly caramelized edges.