It’s on Amazon Prime. Starting it now...If you liked Gymkata, you'll absolutely love Velocipastor.
https://www.imdb.com/title/tt1843303/
After losing his parents, a priest travels to China, where he inherits a mysterious ability that allows him to turn into a dinosaur. At first horrified by this new power, a hooker convinces him to use it to fight crime. And ninjas.