Turnabout by Carmen Webster Buxton

SPSFC

It's not a super power if you can't control it! Jason Miller's biggest worries were keeping up with his homework, paying for his classic jazz habit,and hiding the fact that he carried a flip phone. But then one day he finds himself teleporting from place to place, a talent he can't control. It gets worse when he lands in an alternate world, one that has many, many more women than men. It sounds great until Jason learns the downside to being a precious commodity: Having a harem is no fun when you're the one who's locked up.