How to Make It
Light a grill. In a large nonreactive baking dish, combine 2 teaspoons of the oil with the lemon juice and oregano. Add the swordfish, turn to coat and let marinate for 5 minutes.
Using a damp paper towel, coat the grill with the remaining 1 teaspoon of oil. Remove the swordfish from the marinade and season with salt and pepper. Grill over a medium-hot fire, turning once, until browned and just cooked through, about 10 minutes.