It’s not unusual for police officers to face difficult questions during community events, but can Beverly Hills PD handle such loaded lines of inquiry as “Is the soup vegan and gluten free?” Come by the California Pizza Kitchen on South Beverly Drive on Friday and find out. From 5 p.m. to 9 p.m., the Beverly Hills Police Department and CPK are teaming up for the Special Olympics “Tip A Cop” fundraiser. Police serve alongside waiters in the charity event in which 100 percent of the tips received by police “wait staff” go to the Special Olympics. “It’s such a good…