Heat olive oil in a large skillet over medium-high heat. Season the steaks generously with steak seasoning. Sear for 3-4 minutes per side for medium-rare or longer for preferred doneness. Remove from the pan and let rest before slicing.
In the same skillet, melt the butter and add the minced garlic. Sauté for about 1 minute until fragrant.
Pour in the chicken broth and heavy cream, stirring to combine. Add red pepper flakes, oregano, thyme, and sun-dried tomatoes. Let the sauce simmer for 5 minutes.
Stir in the grated Parmesan cheese and mix until smooth and creamy. Adjust seasoning if needed.
While the sauce is simmering, cook the rigatoni pasta in salted boiling water according to package instructions until al dente. Drain and set aside.
Slice the rested steak into thin strips. Add the cooked pasta to the sauce, tossing to coat evenly. Gently mix in the steak slices.
Serve hot, garnished with extra Parmesan cheese and fresh herbs if desired.