Preheat oven to 325 degrees F.
Wash and separate wings and place in a large glass pyrex pan or a large throw-away turkey pan in a single layer.
Pour entire bottle of teriyaki sauce over wings. Sprinkle oregano over wings.
Cover wings tightly with foil and bake for 1 hour. I turned my wings over after 30 minutes and continued baking for another 30 minutes.
Remove foil and brown wings under broiler for 5 minutes or until crispy.
You can marinate the wings in the teriyaki sauce for a few hours or overnight if desired, but you do not have to.