01 - Cook the pasta in a large pot of salted boiling water according to package instructions until al dente. Drain and set aside, reserving 1/2 cup pasta water.
02 - Pat chicken breasts dry and rub with Cajun seasoning on both sides.
03 - Heat olive oil in a large skillet over medium-high heat. Add chicken and cook 5-6 minutes per side, or until golden and cooked through. Remove to a plate and let rest.
04 - In the same skillet, add sliced bell peppers and sauté for 3-4 minutes until just tender. Add minced garlic and cook for 1 minute more.
05 - Reduce heat to medium. Add butter to the skillet and let it melt. Pour in the heavy cream and bring to a gentle simmer.
06 - Stir in Parmesan cheese, black pepper, salt, and smoked paprika. Cook, stirring, until the sauce is smooth and slightly thickened, about 2-3 minutes.
07 - Slice the cooked chicken into strips.
08 - Add drained pasta and sliced chicken to the skillet. Toss everything to coat in the sauce, adding reserved pasta water a little at a time if needed to loosen the sauce. Serve hot, garnished with chopped parsley and extra Parmesan.