Women’s bantamweight champion  Raquel Pennington puts her title on the line for the first time in the UFC 307 co-main event against former titleholder  Julianna Peña .  Pennington (16-8) won the women’s 135-pound championship at UFC 277 in January, defeating Mayra Bueno Silva   in a one-sided decision.  Peña (11-5) hasn’t fought since losing the title to  Amanda Nunes at UFC 277 in July 2022.        UFC 307 Countdown: Pennington vs Peña UFC 307 takes place on Saturday at Delta Center in Salt Lake City, Utah.  The fight card features to world title bouts.