This Delicious Death by Kayla Cottingham

From the New York Times bestselling author of My Dearest Darkest comes another incredible sapphic horror. When four best friends with a hunger for human flesh attend a music festival in the desert they discover a murderous plot to expose and vilify the girls and everyone like them. This summer is going to get gory.

Five years ago, the melting of arctic permafrost released a pathogen of unknown origin into the atmosphere, causing a small percentage of people to undergo a transformation that became known as the Hollowing. Those impacted slowly became intolerant to normal food and were only able to gain sustenance by consuming the flesh of other human beings. Those who went without flesh quickly became feral, turning on their friends and family. However, scientists were able to create a synthetic version of human meat that would satisfy the hunger of those impacted by the Hollowing. As a result, humanity slowly began to return to normal, albeit with lasting fear and distrust for the people they'd pejoratively dubbed ghouls.

Zoey, Celeste, Valeria, and Jasmine are all ghouls living in Southern California. As a last hurrah before their graduation they decided to attend a musical festival in the desert. They have a cooler filled with hard seltzers and syn-flesh and are ready to party.

But on the first night of the festival Val goes feral, and ends up killing and eating a boy. As other festival guests start disappearing around them the girls soon discover someone is drugging ghouls and making them feral. And if they can't figure out how to stop it, and soon, no one at the festival is safe.