1. Preheat oven to 400°F and line a baking sheet with parchment paper.
2. In a bowl, combine ground turkey, egg white, garlic powder, onion powder, oregano, half the salt, and half the pepper.
3. Roll the turkey mixture into 9 small meatballs and place them on one side of the baking sheet.
4. Toss the halved brussels sprouts and diced sweet potato with olive oil and the remaining salt and pepper, then spread them on the other side of the sheet.
5. Roast for 20-22 minutes until the meatballs are cooked through and the vegetables are tender and browned.
6. While roasting, cook the quinoa in water or broth according to package directions.
7. Place the kale in a large bowl and massage with lemon juice for 1 minute until softened and vibrant green.
8. Assemble the bowl by layering the kale, quinoa, roasted vegetables, cucumber, and turkey meatballs.