Pumpkin, a follow-up to her New York Times bestseller Dumplin—later turned into a feel-good Netflix movie with Jennifer Aniston and a Dolly Parton soundtrack—and its sequel, Puddin’. It’s a loose series, and no background reading is required for Pumpkin, which retreads comfortable ground in a sweet, filling story about self-love and empowerment. As a fat gay kid in the South, Waylon Brewer is used to judgment. He tries to let it roll off his back, finding comfort with his family, including his best friend and twin sister, Clementine, and his favorite TV show, the RuPaul’s Drag R...