Joe Otterson TV ReporterDon Johnson and Chris Redd have signed onto a starring role in “Kenan,” the upcoming NBC series starring Kenan Thompson.“Kenan” was originally ordered to series last year for a spring 2020 debut, but NBC announced in January that the show was being pushed to the 2020-2021 season to continue developing it.Johnson will play Rick, Kenan’s father-in-law in the series. He takes over the role from Andy Garcia.