Rinse the shrimp. Drain and pat dry. Heat the olive oil in a large skillet over low heat. Increase the heat to high and add the shrimp. Cook until the shrimp turn pink. Reduce the heat to medium. Add the garlic, lemon juice and parsley. Cook for 1 minute. Sprinkle with salt and white pepper. Remove to a warm platter. Serve warm with pita or French bread.