A seasonal sandwich has been brought back by a fast food chain, but it is unclear which chain has done so, with both Wendy's and Arby's reportedly reintroducing a fan-favorite seasonal sandwich for a limited time. The return of seasonal sandwiches is not unique to one chain, as multiple fast-food chains are rolling out limited-time fish sandwiches. The availability of these seasonal offerings is temporary, but details about the specific sandwiches and chains are not consistent across reports.