John Wells Productions has brought in Erin Jontow as EVP of Television. Jontow comes to JWP from Amazon Studios where her work included overseeing production on Matthew Weiner's upcoming anthology series The Romanoffs and development of The Nix, the J.J. Abrams-Meryl Streep limited series, which the streaming service had in consideration for some time in the past year or so. Prior to Amazon, Jontow worked as the VP of Television at Media Rights Capital Studios on series…