Step 1: Cook the Pasta : Bring a large pot of salted water to a boil. Add fettuccine and cook according to package instructions until al dente. Reserve ½ cup of pasta water, then drain and set aside.
Step 2: Cook the Chicken : Pat chicken breasts dry and season both sides with salt, pepper, Italian seasoning, and garlic powder. Heat olive oil in a large skillet over medium-high heat. Add chicken and cook for 5–6 minutes per side, until golden brown and cooked through (internal temp: 165°F / 74°C). Remove from the pan, rest for 5 minutes, then slice into thin strips.
Step 3: Make the Alfredo Sauce : In the same skillet, lower the heat to medium. Add butter and melt it. Add minced garlic and sauté for 30 seconds until fragrant. Pour in heavy cream and milk, whisking continuously. Bring to a gentle simmer (do not boil). Stir in Parmesan cheese and cream cheese, whisking until smooth and creamy. Season with salt and pepper to taste.
Step 4: Combine Pasta and Chicken : Add the cooked fettuccine into the Alfredo sauce. Toss well to coat evenly. Add a splash of reserved pasta water if the sauce feels too thick. Top with sliced chicken and sprinkle with fresh parsley.
Step 5: Prepare the Garlic Bread : Preheat oven to 375°F (190°C). In a small bowl, mix softened butter, minced garlic, parsley, and salt. Spread evenly over the cut sides of the bread. Optional: Sprinkle cheese for a gooey topping. Bake for 10–12 minutes, or until golden and crispy. Slice and serve warm.