Rinse drumsticks and pat dry with paper towels. Set aside.
In large bowl, stir chimichurri seasoning with oil, lemon juice and vinegar together. Add in chicken and stir to coat evenly. Cover with plastic wrap and marinate 3-6 hours.
Line a baking sheet with foil and place a rack over top. Spray with nonstick cooking spray and place chicken on top of rack.
Brush with any remaining marinade left in the bottom of the bowl.
Bake at 400 degrees for 20 minutes, then reduce temperature to 350 degrees and continue baking until internal temperature reaches 165 degrees, 10-15 minutes more. Remove from oven and serve with lemon wedges.