ANN ARBOR, Mich. (AP) — After a pandemic-fueled boom, U.S. pizza sales appear to be headed back to earth. Domino’s and Papa John’s pizza chains both said Thursday that their same-store sales lost steam in the fourth quarter compared to the huge increases they saw earlier in 2020. Same-store sales are expected to continue seeing percentage declines well into this year. Pizza delivery remains popular, but diners’ choices are expanding, with more restaurants now offering delivery. In a survey of 3,500 U.S. restaurant operators last fall, the National Restaurant Association found that 27% had added delivery from a third party like DoorDash, while 17% had added in-house delivery. Pizza could also be pressured as the pandemic eases and dining rooms reopen.