It sure looks like Peach Leaf Curl to me. It is caused by the fungus Taphrina deformans and is usually occurs when
spring is warm and wet. It has been in the US for over 100 years. Management is to use dormant spray (either sulfur or copper) prior to bud break (generally 3 applications). Infected leaves should not be composted as the fungi will overwinter. I would NOT reccomend fertilizing as this will just make the
tree flush new growth that it will not be able to defend. The current thinking in arboriculture is that
trees should not be fertilized unless a specific need is shown to exist (in ag applications the desire for more fruit production may be a reason to fertilize). Good luck.