Stir in the minced garlic, allowing it to cook for an additional minute.
Add the diced tomatoes (with juice), chicken broth, heavy cream, Cajun seasoning, paprika, and a sprinkle of salt and pepper. Bring everything to a lively boil.
Stir in the uncooked penne pasta and reduce the heat. Let it simmer on low, uncovered, until the pasta is tender, about 10-12 minutes.
Remove the pot from heat and stir in the grated Parmesan cheese until melted and creamy.
Notes
For added spice, consider adding sliced jalapeños or a dash of hot sauce. Any pasta shape can be used in place of penne.