Preheat oven to 450 degrees. (You will turn the oven to broil right before putting the sushi bake in!)
Cook rice according to package instructions.
Pour in the bottom of a 9-inch pie plate (or 8x8-inch baking pan). Pat the rice down with a spatula or wooden spoon to create a flat surface.
Place seaweed pieces on top of the rice to cover the rice completely.
In a medium bowl, combine the salmon cubes, yum yum sauce, and chili onion crisp.
Add the salmon to the top of the seaweed.
Turn oven to broil and broil for 10-12 minutes, or until salmon is no longer opaque in the middle.