Heat Oil In Large Skillet Over Medium-High Heat. Cook The Onions And Peppers In The Oil Until Tender Crisp, About 3 Minutes. Stir In Hot Dogs, And Cook Until Lightly Browned, About 3 Minutes. Stir In The Tomatoes, And Season With Oregano, Salt, And Pepper; Cook For 3 To 5 Minutes, Or Until Hot Dogs Are Heated Through.