Toss the chicken with Cajun seasoning and cayenne.

Sear the chicken in olive oil over medium-high heat until browned and cooked through, then remove.

Cook the penne in salted water until al dente and drain.

In the same skillet, stir together the heavy cream, tomato sauce, and hot sauce; simmer 5 minutes.

Stir in the Parmesan until melted, then return the chicken and pasta and toss to coat.