1Cook artichoke hearts as directed on box; drain. Immediately rinse with cold water; drain.
2In large glass or plastic bowl, mix artichokes, asparagus and mushrooms. To make dressing, in tightly covered container, shake oil, lemon peel, lemon juice, chives, mustard and salt until well blended. Pour dressing over salad; toss to coat. Cover and refrigerate at least 2 hours.
3Remove vegetables from dressing with slotted spoon; reserve dressing. Arrange vegetables on lettuce on each of 6 plates. Garnish with olives. Serve with reserved dressing.