In a bowl, whisk vinegar, honey, salt, and water until dissolved. Add onions, garlic, and peppercorns to a jar, pour liquid over, and let sit for at least 1 hour.
Preheat oven to 425°F. Spread chopped sweet potatoes on a baking sheet, season with salt and pepper, and roast for 25–30 minutes until tender.
Cook ground turkey in a pan over medium heat, breaking it apart. Cook until no longer pink, about 5 minutes. Add chili powder, paprika, and turmeric.
Massage chopped kale with olive oil, lemon juice, and salt until softened.
Mix peanut butter powder, water, maple syrup, lemon juice, cayenne, and salt until smooth.
Assemble your High Protein Ground Turkey Bowls by layering kale, sweet potatoes, turkey, fresh vegetables, and pickled onions. Drizzle with peanut sauce.