Prep Pasta: Bring a large pot of salted water to a boil, add penne and cook for 10-12 minutes until al dente. Drain, reserving 1 cup of pasta water.

Cook Protein: Heat olive oil in a skillet over medium heat. Sauté chicken or shrimp for 5-7 minutes until cooked to 165°F.

Make Sauce: In the same skillet, add Cajun seasoning and sauté for 30 seconds until fragrant. Add cream and simmer for 2-3 minutes until thickened.

Combine: Return pasta and protein to skillet, tossing for 2 minutes until well-coated. Add bell peppers before serving.

Finish: Taste and adjust seasoning with salt and pepper. Use reserved pasta water to thin the sauce if needed.