Preheat the oven to 350°F (175°C).
Arrange ramen noodles in a 9×13-inch baking dish, breaking them apart if needed to fit evenly.
Pour Alfredo sauce over the noodles.
Add shredded chicken, water, and heavy cream over the noodles and sauce.
Sprinkle pepper over the mixture.
Cover the baking dish and bake until the noodles are tender and the mixture is heated through.
Remove the cover and sprinkle shredded Italian blend cheese evenly over the top.
Return the dish to the oven and bake until the cheese is melted and bubbly.
Serve warm.