Step 1: Marinate the Chicken

Begin by dicing the chicken into small, bite-sized pieces. In a mixing bowl, combine the diced chicken with olive oil, black pepper, onion powder, garlic powder, Creole seasoning, Sazon, and smoked paprika. Mix well, ensuring the chicken is evenly coated. Cover and refrigerate for at least 30 minutes to allow the flavors to develop.

Step 2: Cook the Chicken and Broccoli

Heat a skillet over medium heat and add a tablespoon of olive oil. Once hot, add the marinated chicken and cook for about 6-7 minutes, stirring occasionally, until golden brown and fully cooked. Remove from the skillet and set aside.

In a separate pot, bring water to a boil. Add the broccoli florets and cook for 2-3 minutes until they become tender but still vibrant in color. Drain the broccoli, chop it into small pieces, and set it aside.

Step 3: Prepare the Alfredo Sauce

In the same skillet used for the chicken, melt the butter over medium heat. Add the minced garlic and sauté for about one minute until fragrant. Pour in the heavy cream and add the cream cheese. Stir continuously until the cream cheese is fully melted and the mixture becomes smooth.

Add grated Parmesan cheese, salt, black pepper, onion powder, garlic powder, and Italian seasoning. Continue stirring until the sauce thickens and reaches a smooth consistency. Remove from heat and set aside.

Step 4: Cook the Pasta Shells

Bring a large pot of salted water to a boil. Add the jumbo shells and cook according to the package instructions until al dente. Reserve 1/2 cup of pasta water, then drain and set the shells aside to cool slightly.

Step 5: Assemble the Stuffed Shells

In a large mixing bowl, combine the cooked chicken, chopped broccoli, shredded Parmesan, grated Parmesan, and mozzarella cheese. Pour in a portion of the Alfredo sauce and mix well to create a creamy filling.

Take each cooked pasta shell and spoon the filling into it. Place the stuffed shells in a greased baking dish, arranging them in a single layer. Pour the remaining Alfredo sauce over the shells, ensuring they are evenly coated. Sprinkle additional mozzarella cheese and a dash of Italian seasoning on top.

Step 6: Bake the Stuffed Shells

Preheat the oven to 375°F (190°C). Cover the baking dish with aluminum foil and bake for 15 minutes. Remove the foil and bake for another 5-10 minutes, or until the cheese on top becomes golden and bubbly.

Step 7: Serve and Enjoy

Once the stuffed shells are baked to perfection, remove them from the oven and let them sit for a few minutes before serving. Garnish with fresh parsley, if desired. Serve hot and enjoy the creamy, cheesy goodness.