To make your marinade: Combine yogurt, 2 tablespoon olive oil, lemon juice, and spices.
Trim excess skin off the drumsticks if necessary, then place them in a large bowl, pour marinade over, and toss to coat. (This is a good time to start the oven preheating to 425 degrees while you let the chicken marinate for at least 20 minutes.)
Drizzle a foil-lined rimmed baking sheet with remaining olive oil, then arrange drumsticks in a single layer on the baking sheet.
Bake chicken at 425 degrees for 40-45 minutes or until cooked through, flipping over halfway through.
Garnish chicken with chopped green onions (optional) and serve with lemon wedges.