If you're referring to Giordano's Stuffed Pizza, you should check out Nancy's or Suparossa's versions. If in fact you mean their Pan Pizza, there are, IMHO, so many other places to get a better version (one unnamed place I have a particular prejudice for), the list would be too long for this post.
(Multiple locations; I visit these two most frequently)
3970 North Elston Avenue
8706 W. Golf Rd.
4256 N. Central Ave.