Bring the water, milk and cream to a boil in a large saucepan over high heat.
Stir in the elbow macaroni and reduce to medium heat. The liquid should be barely bubbling, not boiling. Cook, stirring frequently, until slightly past al dente, about 7 to 10 minutes.
Add the American cheese, Dijon mustard, chili oil (optional), Worcestershire, and seasonings and stir until the cheese is completely melted and smooth.
Off heat, stir in Colby jack cheese and gruyere. Cover the pan and let it stand for 5 minutes so the cheeses melt gently into a creamy sauce.
Stir the macaroni until smooth and creamy, mix in the mozzarella, and transfer to a baking dish. The mixture will be runny and thin, don't worry! It will thicken to the perfect creaminess.
Sprinkle the top of the mac and cheese with panko, shredded parmesan and mozzerella cheese.
Bake in a 400°F oven for 10 minutes, or until the top is crispy and golden.
Serve hot with extra cheese and freshly chopped parsley on top if you’re feeling bold.