WASHINGTON — Health and Human Services Secretary Robert F. Kennedy Jr. wants to make President Trump eat healthy again. Kennedy expressed bewilderment during a recent podcast appearance that his boss is among the living, given the chief executive’s fondness for fast food and penchant for slurping down Diet Cokes. “The president,” Kennedy told “The Katie Miller Podcast” during Tuesday’s episode when asked who in the cabinet had the most “unhinged eating habits.” “The interesting thing about the