Here’s why. A Panera bread chicken salad sandwich on whole grain bread is  660 calories with  30 grams of fat. Their tuna  salad on whole grain is 420 calories and  22 grams of fat. If you are considering a Caesar,  it’s 400 calories and 27 grams of fat.  I am not picking on Panera because you will find the same at most any restaurant. If you order any creamy dressing at a restaurant, you might as well order chocolate cake and really enjoy the fat you are getting. The only way to eat a healthy salad at a restaurant is to order a vinaigrette dressing on the side. If you put one tablespoon on, you will probably get by with about 100 calories, of healthy olive oil.