Waldorf Chopped Salad

Name: Waldorf Chopped Salad
Ingredients: 3 tablespoons EVOO; 2 teaspoons lemon zest; 2 tablespoons lemon juice; 2 teaspoons minced shallot; 6 cups chopped romaine; 3 ribs celery, thinly sliced, leaves reserved; 2 Fuji apples-halved, cored and thinly sliced; ¼ cup chopped walnuts, toasted