Jamie Chung is a rare actress. She started out as a reality TV star on MTV's Real World. Real World is a show where seven strangers would live together with the producer's hopes that they would all fight and cause entertaining drama. Many people have made careers out of their reality stardom, but few have gained respectable acting careers from it. Jamie Chung is someone who has surpassed her identity as a reality TV star. Now she's a respected actress, which might have something to do with her acting normal on Real World.
It would have been a big deal to cast an Asian actress as Wonder Woman, but it might not have made sense with the Amazonian demographics on Themyscira. Plus there is a specific sector of toxic fans who get upset anytime their favorite heroes change race.