Cut wings at each joint; discard tips. Place other joints in shallow baking pan; sprinkle with olive oil, garlic, oregano, parsley flakes, Parmigiano cheese, salt and pepper. Place in 350F oven for about 45 minutes. Remove from oven, pour vinegar over chicken and place under broiler about 4 minutes on each side. Garnish serving platter with radicchio and parsley