Jon Gosselin isn’t the only one in his family utilizing weight-loss medication. In a new interview, daughter Hannah Gosselin, 20, revealed she started semaglutide injections around the same time as her father — and just like the dad-of-eight, she’s “really happy” with the results! “When I put on my pair of shorts that I wore two years ago I danced around my room … I was so happy,” she gushed. “It was the best feeling ever.” “You probably would not have caught me in a swimsuit last summer. I don’t even think I went to the beach,” the young adult recalled. “I have been spending my whole summer…