Cut the tops off the buns and hollow out slightly. Reserve the tops for another use. Lightly spray the inside with margarine spray, and sprinkle with garlic bread sprinkle. Toast buns under the broiler until just golden, 3-5 minutes. Place buns on serving platter and set aside. Toss the eggs, ham, tomatoes, and lettuce with the salad dressing. Add pepper to taste and toss again. Stuff buns with salad and serve immediately.