Boil the pasta according to package directions, preferable until al dente as it will continue to cook in the sauce. Drain the pasta and set aside.
In a large wide skillet heat the oil and butter on medium heat. Once it is hot, add the sliced peppers and saute until slightly soft.
Add the minced garlic, and saute for just a few minutes until fragrant but not brown. Reduce the heat.
Next, add the old bay, cajun seasoning, salt, black pepper, paprkina, chili flakes and tomato paste and continue to stir on low heat for 2-3 minutes. Add the kale and stir for a few more minutes.
Now add the heavy cream, stir so the spices are all incorporated evenly in a sauce. Bring the sauce to a slow simmer. Once it is at a slow simmer, add the pasta, turn off the heat and on top of the pasta add the parmesan cheese. Use tongs to mix everything thoroughly. Let sit for 1-2 minutes and sauce will thicken. Garnish with fresh parsley, additional parmesan and serve hot!