Domino’s Pizza (DPZ) is pulling out all of the stops to significantly reverse a startling trend in its stores. Over the past year, the pizza chain has noticed a gradual weakening in sales at its U.S.

Back in the '90s, Pizza Hut figured out how to add even more cheese to appease cheese lovers by putting it right in the crust. The stuffed crust pizza became a huge hit, and other pizza chains followed suit, including Papa John’s. Remarkably, Domino’s didn't jump on the stuffed crust bandwagon—until now.

Domino's first-of-its-kind crust pizza in the US was '30 years in the making' after Pizza Hut launched the same option in the 1990s. 'Domino's had operational concerns with launching it ourselves ...