Easy Chicken Alfredo

8 ounces fettuccini pasta
1 cup milk
2 tablespoons all-purpose flour
1/2 teaspoon garlic powder
3 teaspoons minced onion
salt and pepper to taste
1/2 cup grated Parmesan cheese
2 cups diced, cooked chicken breast meat

Bring a large pot of lightly salted water to a boil. Cook pasta in boiling water for 8 to 10 minutes, or until al dente; drain, and set aside. In a food processor, place the milk, flour, garlic powder, onion, salt and pepper, and Parmesan cheese. Blend until smooth. Transfer the blended mixture to a saucepan over medium heat. Mix in the chicken, and cook until heated through. Serve hot over pasta.