Preheat the oven to 375 degrees F (190 degrees C).
In a large mixing bowl, combine the softened cream cheese, soy sauce, crab meat, sour cream, Sriracha sauce, sliced green onions, 1 ½ cups shredded mozzarella cheese, mayo, garlic powder, salt, and black pepper. Mix well using a wooden spoon or hand mixer until all ingredients are thoroughly combined.
Transfer the mixture to an 8x8 baking dish, spreading it out evenly.
Sprinkle 1 1/2 cups of shredded mozzarella cheese evenly over the top of the mixture.
Place the baking dish in the oven and bake for 25 minutes, or until the cheese is melted and bubbly.
Remove the dip from the oven and let it cool slightly for 5-6 minutes. Serve your hot crab dip warm with the crispy wonton chips.