Creamy Chicken Alfredo with Spinach and Mushrooms

Ingredients

• 2 boneless, skinless chicken breasts, sliced into strips
• 1 teaspoon salt
• 1/2 teaspoon black pepper
• 1/2 teaspoon garlic powder
• 1/2 teaspoon Italian seasoning
• 1 tablespoon olive oil
• 340 grams fettuccine or other pasta
• 950 millilitres water or chicken broth
• 45 grams butter
• 3 cloves garlic, minced
• 360 millilitres heavy cream
• 120 millilitres whole milk
• 60 grams grated Parmesan cheese
• 1/2 teaspoon salt
• 1/4 teaspoon ground nutmeg, optional
• 225 grams mushrooms, sliced (cremini or button)
• 2 cups fresh spinach