Combine the shrimp, olive oil, garlic and oregano. Toss lightly to coat the shrimp evenly.
Place in a shallow baking dish. Squirt with lemon juice. Broil until the shrimp are just tender (3-5 minutes, depending on size).
Sprinkle with parsley, salt and pepper. Serve.
You may use Swordfish cut into 1" cubes in place of the shrimp.