Preheat oven 450°. On a non-stick pan, roll out pizza dough.
Using a food processor, blend artichoke hearts and onions together.
In a separate bowl, whisk cream cheese, egg whites, mayo, mustard, and garlic until smooth. Stir in 1 ½ cups of the Swiss cheese, artichoke mixture and pepper.
Spread cheese mixture evenly over pizza dough. Bake 14 to 16 minutes or until light golden brown. Top with tomatoes, crumbled bacon, and extra cheese.
Serve warm as an appetizer!