Josh Jacobs is fittin' in just fine in Green Bay ... the Pro Bowl running back copped a pair of custom cleats, inspired by the fanbase's iconic "Cheesehead" look during the Packer's win on Sunday!
You might've noticed the dope spikes on Jacobs' feet during the Packers vs. Titans game at the Nissan Stadium in Nashville ... where GB handed Tennessee their third consecutive loss of the season.
TMZ Sports has learned the cleats -- designed by his go-to sneaker guy, Luke the Dangler -- were built on the Nike Vapor Edge 360 cleat .