Cook the pasta according to directions. Before the water starts to boil, add about a tablespoon of salt and olive oil into the water. Stir the pasta to prevent sticking and drain when ready.
In a sauté pan, melt the butter and 1 tablespoon of the olive oil over medium low heat. Once melted, toss in the chopped onion and garlic. Sauté until lightly browned for about 3-5 minutes. Add in the shrimp, hot sauce, pepper flakes, salt and pepper to taste, and water. Adjust the hot sauce and pepper flakes according to preference. Close the lid and cook for another 5 minutes or until the shrimp turns to a slightly pink color.
Add the chicken broth and lemon juice to the sauté pan. Mix to combine and cook for another 5 minutes over low heat. The broth will turn to a slight sizzle.
Place the pasta in the sauté pan and toss with the sauce. Add in the parsley, remaining tablespoon of olive oil, and pepper to taste. You can also add more pepper flakes and olive oil to the pasta depending on preference.
Serve with freshly cracked pepper and a drizzle of olive oil.