Steps

• Bring a large pot of salted water to a boil. Add fettuccine and cook al dente. Reserve a cup of the pasta water, then drain the pasta.
• Heat olive oil in a large skillet over medium-high heat. Season chicken with salt and pepper, adding to skillet. Cook until golden brown and cooked through, setting aside on a plate.
• In the same skillet, reduce the heat to medium-low. Melt butter, add minced garlic, stirring until fragrant.
• Pour in heavy cream, stirring to combine. Allow to simmer gently, then gradually add grated Parmesan, whisking until smooth.
• Return chicken to skillet, adding pasta. Toss to combine, loosening sauce with reserved pasta water if needed.
• Garnish with chopped parsley and serve immediately.