This beautiful appetizer consists of an Italian chopped salad that is mounded into cooked pasta shells. It can be made up to four hours ahead and the romaine salad will remain crispy for serving. Note: To give proper credit, this is an adaptation of recipe #29329, which uses chicken as a main ingredient. In the version I am posting, the chicken is eliminated and the chopped salad is garnished with salami and feta cheese. I also make my own vinaigrette, but if you prefer, just use a bottled Italian dressing.