Cook pasta in salted boiling water until al dente. Reserve some pasta water and drain.

Season shrimp with Cajun seasoning, paprika, salt and pepper.

Sear shrimp in olive oil until pink and cooked through, then set aside.

In the same skillet, melt butter and sauté garlic and onion until fragrant.

Add bell peppers and cook until slightly tender.

Pour in chicken broth and simmer briefly, then add heavy cream.

Stir in parmesan cheese until sauce is smooth and creamy.

Add cooked pasta and shrimp back into the skillet and toss to combine.

Adjust consistency with reserved pasta water if needed, garnish with parsley and serve.