Don’t look for the Jets to set the NFL afire this year, especially with No. 1 QB Chad Pennington out. Pennington or no Pennington, it won’t matter, because Eric Mangini is the coach. A protégé of all-seeing Patriot coach Bill Belichick, Mangini is more like a new version of former Giant and Jet coach Bill “Tuna” Parcells. Unlike Parcells, Mangini won’t start to smell up the joint after only a few years. Along with Met skipper Willie Randolph, Mangini’s a fresh face in the New York pro-coaching ranks.