Follow these simple steps to make this incredible pasta dish:

1. Cook Pasta: In a large pot, boil salted water and cook the pasta according to package instructions until al dente. Drain and set aside.
2. Prepare Chicken: Season diced chicken breasts with salt and pepper.
3. Sauté Chicken: In a large skillet, melt 2 tablespoons of butter over medium heat. Add chicken and cook for about 6-8 minutes until golden and cooked through. Remove from the skillet and set aside.
4. Sauté Garlic: In the same skillet, add the remaining 2 tablespoons of butter. Add minced garlic and sauté for about 1-2 minutes until fragrant, but not browned.
5. Create Sauce: Pour in the heavy cream and bring to a gentle simmer. Stir well to combine with the garlic.
6. Add Cheese: Gradually mix in the grated Parmesan cheese, stirring until the sauce thickens. Season with additional salt and pepper if needed.
7. Combine Ingredients: Return the cooked chicken to the skillet and add the drained pasta. Toss everything together until evenly coated in the sauce.
8. Serve Warm: Allow the pasta to heat through for another minute, then remove from heat.

These straightforward instructions will guide you to create this delicious meal effortlessly.