In a gallon plastic zipper bag, place chicken with sour cream, turmeric, garlic powder, onion powder, and salt.
Marinade for 1 hour to overnight.
Bake on a sheet pan at 450° for 30 minutes until the internal temperature of the chicken reaches 170°.
On a second sheet pan roast the vegetables with a drizzle of oil, salt, and pepper, just until the vegetables are tender without overcooking them (they take about 15-20 minutes.