Father Leo Patalinghug was making the marinade for his fajitas in front of a crowd at Mount St. Mary’s University in Emmitsburg, Md., where he serves as director of pastoral field education for the seminary — and TV cameras. He thought the Food Network was filming a show about Grace Before Meals, his ministry dedicated to fostering stronger communities through stronger families, one meal at a time. But the priest-chef wasn’t just cooking for the gathered crowd or TV that June day.“I was talking and I realized that standing two feet away listening to me was Bobby Flay,” recalled Father...