Heat the oil in a large pot over medium heat and add the chicken, salt, pepper, pepper flakes and dried oregano; cook for 4-5 minutes or until the chicken becomes brown. Add the onion and garlic, then cook for 3-4 minutes more.
Now, add the uncooked pasta, Chicken broth, Tomato sauce and Worcestershire sauce, stir well, then bring it to a boil. After that, reduce the heat to low and let it simmer for 20-30 minutes or until the pasta is fully cooked.
Garnish with parmesan cheese and fresh basil leaves, then serve.
Notes
Just in case the pasta is not spicy enough in the end, you can simply add some extra red pepper flakes.