Bring a large pot of water to boil for pasta.
Toss shrimp with 1 to 2 tablespoons of cajun seasoning and coat well.
Heat a large skillet on medium-high and drizzle the pan with olive oil.
Add shrimp and cook for 2 minutes, until starting to curl.
Flip shrimp over and cook a minute or two then remove to a plate and set aside.
Drizzle pan with olive oil, add sausage, and brown until caramelized, for 4 to 5 minutes.
Then remove to a plate, and set aside.
Add pasta to boiling water and cook until al dente, a minute less than instructions.
Lower heat to medium and add a drizzle of olive oil, add onion, pepper, thyme, smoked paprika, 1 tablespoon cajun seasoning, brown sugar, and a pinch of salt.
Saute until onion and pepper have softened a bit, scraping up browned bits.
Add garlic and cook until fragrant, for only 30 seconds.
Add crushed tomatoes, chicken broth, and Worcestershire sauce and bring to a simmer, stirring and scraping any brown bits then, simmer for 2 minutes.
Add ½ and ½ and stir to combine, bring to a simmer.
Once simmering, add cooked pasta and sausage, then stir to combine and heat through, 2 to 3 minutes.
Add more chicken broth or ½ and ½ if dry or for more sauce.
Salt and pepper to taste, then add shrimp on top of pasta.
Sprinkle with grated Parmesan and chopped parsley. Enjoy!