12 ounces skinless boneless chicken thighs
1 tablespoon butter
1 large green bell pepper, thinly sliced
1 red bell pepper, thinly sliced
1 small red onion, thinly sliced
2 garlic cloves, minced
1/2 teaspoon dried crushed red pepper
1 1/2 cups whipping cream
1 cup chicken stock or canned low-salt chicken broth
3 tablespoons thinly sliced fresh basil
1/4 cup finely grated Parmesan cheese
8 ounces fettuccine
Additional grated Parmesan cheese