01 - Bring a large pot of salted water to a boil. Cook the fettuccine according to package directions until al dente. Reserve 1/2 cup pasta cooking water, then drain and set aside.
02 - Sprinkle the chicken strips evenly with salt and black pepper.
03 - Heat olive oil in a large skillet over medium-high heat. Add the chicken and sauté for 5 to 7 minutes, turning occasionally, until golden brown and cooked through. Remove from skillet and keep warm.
04 - In the same skillet, melt the butter over medium heat. Add minced garlic and cook for about 1 minute until fragrant, avoiding browning.
05 - Pour in the heavy cream and bring to a gentle simmer. Whisk in the Parmesan cheese continuously until fully melted and the sauce is smooth. Stir in nutmeg if desired.
06 - Adjust seasoning with salt and black pepper to taste.
07 - Return the cooked chicken to the skillet and toss to coat in the creamy sauce.
08 - Incorporate the drained fettuccine into the skillet. Toss to combine, adding reserved pasta water gradually to loosen the sauce as needed.
09 - Plate immediately, garnishing with chopped fresh parsley and extra grated Parmesan cheese.