Preheat oven to 400.
Spread pizza crust on pizza pan or pizza stone. Bake for 8 -12 minutes.
While crust is done, combine cream cheese and shallot; divide and spread over crust. Top crust with chicken, cheese and bacon.
Return to oven and bake 12-15 minutes or until crust is brown and cheese is melted.
Meanwhile, in a small bowl, combine sour cream, milk and dressing mix.
When pizza is done, sprinkle on lettuce and tomato and drizzle with dressing.