Miranda Lambert is set to drop straight fire this Friday (Sept. 13) in the form of her new album, Postcards From Texas. She’s been hard at work since parting ways with Sony Music Nashville, her longtime record label, preparing to launch this new project with Republic Records and in partnership with Big Loud When Lambert stopped by Taste of Country Nightsrecently, host Evan Paul asked her if she feels like she has something to prove to her old label now that she has a new home — does she have a chip on her shoulder? The “Wranglers” singer did not hold back in her reply. “Well, yeah, a little bi…