4 skinless, boneless chicken breast halves, cut into bite size pieces
6 cloves garlic, minced 2 1/2 cups fresh sliced mushrooms
1 tablespoon olive oil salt to taste
ground black pepper to taste 2 cups half-and-half
6 ounces Gorgonzola cheese, crumbled
1/4 cup toasted walnuts, chopped 8 ounces penne pasta
1/4 cup grated Parmesan cheese for topping (optional)
