Mix together lemon zest, mayonnaise, chives, Old Bay Seasoning, cream, and panko breadcrumbs. Add crab meat trying to keep the lumps intact. Fold in crab meat and let rest for 30 minutes so the breadcrumbs can absorb the liquid. To shape the crab cake, pack the crab mixture into a 2-1/2-ounce ramekin. Insert a butter knife into the ramekin to remove the crab cake and coat the outside of the crab cake with more breadcrumbs.