Creamy Dreamy The Ultimate Homemade Chicken Alfredo

Ingredients

• 1 1/2 lbs (680g) boneless, skinless chicken breasts, cut into 1-inch pieces
• 1 tbsp (15ml) olive oil
• 1 tsp (5g) garlic powder
• 1/2 tsp (2.5g) onion powder
• 1/4 tsp (1.25g) paprika
• Salt and freshly ground black pepper to taste
• 1 lb (454g) Fettuccine pasta
• 8 quarts (7.6 Liters) water
• 2 tbsp (30ml) salt
• 1/2 cup (1 stick or 113g) unsalted butter
• 2 cloves garlic, minced (about 1 tsp)
• 1 1/2 cups (360ml) heavy cream
• 1 cup (240ml) milk
• 1/2 cup (57g) grated Parmesan cheese, plus more for garnish
• 1/4 cup (28g) grated Pecorino Romano cheese, plus more for garnish
• 1/4 tsp (1.25g) ground nutmeg
• 2 tbsp fresh parsley, chopped (optional garnish)