Cut wonton wrappers into triangles and either fry them in hot oil or bake them until golden and crispy. I prefer baking for a lighter version, but frying gives a more authentic crunch. Let them cool completely before assembling.
In a bowl, mix softened cream cheese, sour cream, shredded crab, green onions, garlic powder, and Worcestershire sauce. Stir until smooth and well combined. The mixture should be creamy but slightly thick.
Spread the crispy wonton chips on a baking tray in an even layer. Spoon the crab mixture over the chips, distributing it evenly. Sprinkle shredded mozzarella generously on top.
Place the tray in a preheated oven and bake until the cheese melts and starts bubbling. This usually takes about 8–10 minutes. Keep an eye on it to avoid over-browning.
Drizzle sweet chili sauce over the hot nachos for that signature flavor. Garnish with extra green onions if you like. Serve immediately while everything is warm and gooey.