Begin by cooking the fettuccine pasta according to package instructions until al dente. Drain and set aside, reserving 1/2 cup of the pasta water.
While the pasta is cooking, season the chicken breasts with salt and pepper.
In a large skillet, heat olive oil over medium heat. Add the seasoned chicken breasts and cook for 6-7 minutes on each side until golden brown and cooked through. Remove the chicken from the skillet and let it rest for a few minutes before slicing it into strips.
In the same skillet, reduce the heat to low and add the minced garlic and red pepper flakes (if using). Sauté for about 1 minute, being careful not to burn the garlic.
Pour in the heavy cream and bring to a gentle simmer, stirring frequently. Add in the grated Parmesan cheese, stirring until it melts and creates a creamy sauce. If the sauce is too thick, add a little reserved pasta water to reach your desired consistency.
Add the cooked fettuccine to the skillet and toss to coat it evenly with the sauce. Finally, stir in the sliced chicken and mix well to combine all the elements.
Taste and adjust seasoning with more salt and pepper if desired.
Serve immediately, garnished with chopped fresh parsley for a pop of color.
Notes
Garnish with fresh parsley for added flavor and color.