01 - Cook pasta in salted boiling water until al dente. Reserve 1/2 cup pasta water, then drain and set aside.
02 - Season chicken pieces with salt, pepper, and dried Italian herbs.
03 - Heat olive oil in large skillet over medium-high heat. Add chicken and cook 5-7 minutes until golden and cooked through. Transfer to plate and set aside.
04 - Reduce heat to medium. Melt butter and add minced garlic. Sauté 1-2 minutes until fragrant.
05 - Sprinkle flour and cook, stirring constantly, for 1 minute to form roux.
06 - Gradually whisk in milk and heavy cream until smooth and slightly thickened, about 3-4 minutes.
07 - Stir in grated Parmesan and nutmeg. Continue stirring until cheese melts and sauce becomes creamy. Season with salt and pepper to taste.
08 - Return chicken to skillet, then add drained pasta. Toss everything together, adding reserved pasta water as needed to reach silky consistency.
09 - Remove from heat. Garnish with chopped parsley and extra Parmesan before serving.