Thin Herb Omelet and Arugula Sandwich

From Vegetarian Suppers by Deborah Madison Serves 2 to 4 Ingredients: 5 Eggs Sea Salt and Freshly Ground Pepper 4 thin Scallions, including an inch or more of the greens, thinly slices 2 tablespoons chopped Parsely 2 teaspoons chopped Tarragon 2 tablespoons minced...