Remove your chicken breasts from the refrigerator about 15 minutes before cooking. Pat them completely dry with paper towels—this is absolutely critical for getting a proper sear. Moisture is the enemy of browning. Place each breast between two sheets of plastic wrap and pound it gently to an even ¾-inch thickness. This ensures everything cooks at the same rate and the chicken stays tender. Pour your blackened seasoning onto a shallow plate and season both sides of each breast generously, pressing gently so the spices adhere.

Heat 2 tablespoons of extra virgin olive oil in a large skillet over medium-high heat. You want the oil to shimmer and move easily—this typically takes 2-3 minutes. Test it by holding your hand a few inches above the pan; you should feel significant heat. Carefully place your seasoned chicken in the hot oil. Don't move it for 6-7 minutes. This is where the magic happens. The spices caramelize, the exterior blackens slightly (yes, it should look dark—that's the point), and a flavorful crust forms. You'll know it's ready to flip when it releases easily from the pan. Flip each breast and cook the second side for 5-6 minutes until the internal temperature reaches 165°F when measured with an instant-read thermometer at the thickest part. The exterior should be deeply browned, almost charred in spots. That's not burned; that's blackened. Transfer the cooked chicken to a cutting board and tent it loosely with foil. It will continue cooking slightly as it rests. Don't skip this step—resting keeps the juices inside instead of on your plate.

While your chicken rests, bring a large pot of salted water to a rolling boil. Add 16 ounces of rigatoni and stir occasionally to prevent sticking. Cook for 2 minutes less than the package recommends—you want the pasta slightly al dente because it will finish cooking in the sauce. Reserve ½ cup of pasta water before draining. This starchy water is liquid gold for adjusting your sauce consistency. Drain the pasta but don't rinse it; the starch helps the sauce cling beautifully.

In the same skillet where you seared the chicken (yes, keep those browned bits), melt 2 tablespoons of butter over medium heat. Add your diced onion and cook for 3-4 minutes, stirring occasionally, until it becomes soft and slightly translucent. Add your minced garlic and cook for 30 seconds to 1 minute until fragrant. Then add the tomato paste and stir constantly for about 1 minute. This cooking step removes any raw flavor from the paste and deepens its color. Sprinkle in the paprika, blackened seasoning, black pepper, and kosher salt. Stir everything together and cook for another minute. At this point, your kitchen should smell absolutely incredible—toasted spices, caramelized aromatics, and that signature Cajun warmth.

Pour in your chicken broth, using a wooden spoon to scrape up all those browned, flavorful bits from the bottom of the pan (this is called deglazing). Bring the mixture to a gentle simmer and let it bubble for 3-4 minutes so the broth reduces slightly and concentrates in flavor. Slowly pour in your cold heavy cream while stirring constantly. Cold cream added to hot broth can separate if you're not careful, but constant gentle stirring prevents this. The mixture should look smooth and silky. Never let it reach a hard boil—keep the heat at medium so it simmers gently.

Remove the pan from heat slightly and stir in your grated Parmesan cheese a little at a time, stirring constantly until fully incorporated. The residual heat will melt it perfectly without making it grainy. If your sauce seems too thick, add reserved pasta water a tablespoon at a time until you reach the consistency you like—it should coat the back of a spoon but still flow slightly. Add your cooked pasta directly to the sauce and toss gently but thoroughly, using tongs to coat every strand. Taste and adjust seasoning with salt and pepper as needed. Slice your rested chicken against the grain into strips (this makes it more tender) and arrange over the pasta. Garnish with fresh chopped parsley and a pinch of crushed red pepper if you want extra heat.