All things in life and in universe change. Eventually. After the restaurant went through transformation in redoing menu items and recipes, the TASTE is NOT what it used to be. The staff and the service is still good to excellent. Hence, 2 stars rather than just 1.
In addition, the price increase is beyond significant. $18+ for a 12" 1-topping pizza on any given day is excessive. By the time you add a beverage, you are looking easily at $20+ per person. If you have alcoholic beverage, than it's $27+ per person.