Poor Kerry Washington was just trying to make the rounds as TV’s “It Girl” by hosting “Saturday Night Live” next month, but she inadvertently walked into a growing controversy about the cast’s lack of diversity. NBC’s announcement Wednesday that the “Scandal” actress would host the Nov. 2 broadcast comes on the heels of SNL regular Kenan Thompson who opined this week that the real problem is the lack of black female comedians. “It’s just a tough part of the business,” Thompson told TVGuide.com. “Like in auditions, they just never find ones that are ready.” O-kay, then. His remarks contributed to the ongoing firestorm which began last month when the show debuted six new cast members — none of them African Americans.