Salmon Sushi Bake

Name: Salmon Sushi Bake
Ingredients: 1 1/2 pound salmon filet; 1 1/2 teaspoons kosher salt, divided; 1/4 teaspoon pepper; 1/2 teaspoon lemon pepper; 1/4 teaspoon garlic powder; 1/4 teaspoon paprika; 2 teaspoons olive oil; 2 cups sushi rice, rinsed; 2 3/4 cups water; 2 teaspoons rice vinegar; 8 ounces cream cheese, softened; 1 cup kewpie mayonnaise, divided; 3 Tablespoons sriracha, plus more to taste, divided; 2 teaspoons soy sauce; 8 ounces imitation crab, shredded and chopped; 8 ounces cream cheese; 3 large sheets nori (roasted seaweed), about .25 ounces; 2 teaspoons furikake optional; 2 teaspoons everything bagel seasoning; 2 teaspoons lime juice; Sliced green onions and diced avocado for serving