In a large bowl, combine mayonnaise, celery, 1 cup cheese, water chestnuts, 1/2 cup bacon, carrots and chives; mix well. Add popcorn; stir to coat. Spoon into a lettuce-lined bowl. Top with the remaining cheese and bacon. Serve immediately.
Editor's Note: 1/2 cup of unpopped kernels equals about 4 cups popped popcorn.