Eggs Mimosa with Artichoke Tapenade

Name: Eggs Mimosa with Artichoke Tapenade
Ingredients: 6 eggs, hard boiled (see How to Steam Hard Boiled Eggs ); 3/4 cup chopped artichoke hearts (from about 1/2 14-ounce can artichokes hearts in water, drained); 1/2 teaspoon capers, drained; 4 pitted green olives, chopped; 1 teaspoon minced chives or green onion greens, packed; 1 teaspoon chopped fresh tarragon and/or parsley, packed; 2 Tbsp mayonnaise; 2 Tbsp grated Parmesan cheese, packed; 1/8 teaspoon ground black pepper; Sprigs of mâche lettuce or baby spinach for garnish