1. Start by bringing a large pot of salted water to a boil. Cook the fettuccine according to package instructions until al dente. Drain and set aside.
2. While the pasta is cooking, season the chicken breasts generously with Cajun seasoning, pressing the spices into the meat.
3. In a large skillet, heat the olive oil over medium-high heat. Add the chicken breasts and cook for about 6-7 minutes on each side, or until they’re cooked through and have a nice blackened crust. Remove the chicken from the skillet and let it rest on a cutting board.
4. In the same skillet, reduce the heat to medium and melt the butter. Add the minced garlic and sauté for about 1 minute until fragrant.
5. Pour in the heavy cream, bring it to a gentle simmer, and stir in the Parmesan cheese. Continue stirring until the cheese has melted and the sauce is smooth and creamy.
6. Add the cooked fettuccine to the skillet, tossing it gently to coat with the Alfredo sauce. Season with salt and pepper to taste.
7. Slice the rested chicken into strips and lay them over the pasta. Garnish with chopped parsley if desired, and serve immediately.

Remember, cooking is about tasting as you go. Don’t be afraid to adjust the seasoning or add a little more cheese if that’s what your heart desires. After all, every kitchen has its own rhythm, much like the noisy dinners at my childhood home.