Preheat the oven to 400°F. Line a large baking sheet with parchment paper and lightly spray the parchment with nonstick cooking spray.
Slice the 30 wonton wrappers diagonally into triangles. Arrange the triangles in a single layer on the prepared baking sheet without overlapping.
Lightly spray the arranged wonton triangles with cooking spray, season evenly with kosher salt to taste, and, if using, sprinkle up to 1/2 teaspoon black sesame seeds over them.
Bake the wonton triangles for 6–8 minutes, until they are lightly browned and crispy. Remove from the oven and transfer the baked wonton chips to a serving platter.
While the wonton chips bake (or immediately after removing them), in a medium bowl whisk together 4 ounces softened cream cheese, 5 tablespoons heavy cream, 3/4 teaspoon soy sauce, 1/2 teaspoon Worcestershire sauce, 1/4 teaspoon sesame oil, 1/2 teaspoon powdered sugar, and 1/4 teaspoon garlic powder until the mixture is creamy and smooth.
Fold most of the 2 thinly sliced green onions into the cream cheese mixture, leaving some sliced green onions for garnish.
Spread the cream cheese sauce evenly over the baked wonton chips on the serving platter.
Evenly sprinkle 1 2/3 cups chopped imitation crab meat over the sauced chips.
Drizzle 1/4 cup sweet chili sauce and 2 tablespoons garlic chili oil over the chips.
Garnish with the remaining sliced green onions and sesame seeds for garnish. Serve immediately.