Jason Oppenheim is now sporting an ‘I Own Pioneertown’ tank top in the gym. It comes as his Selling Sunset co-star, Alanna Gold, confused fans after claiming she owns the small western town. When Alanna Gold came onto the Selling Sunset scene, she claimed she owns an entire town. The whole thing was simply the Netflix star getting “too excited,” though, as she doesn’t own it at all. Jason Oppenheim wears Pioneertown topJason Oppenheim wore an ‘I Own Pioneertown’ tank top to the gym. He shared a video of him wearing the get-up while working out to his Instagram Stories on September 17. The mill…