At Chiotle, or Qdoba, or any other type of restaurant like this, you actually see the people fixing up what you eat, although you don't see them making it (that is still in the back). At Pick Up Sticks (which I like a lot), you actually see the people COOK your food, which I like also. But alas, at any restaurants, 8 people behind the scenes can touch your food. It is what it is.
Always eat at places which are designated clean, and have good reviews.