Creating Spicy Feta Chicken Alfredo is simple when following these easy steps:

1. Cook Pasta: In a large pot of boiling salted water, cook the fettuccine according to the package instructions until al dente. Drain and set aside.
2. Sauté Chicken: In a large skillet, heat olive oil over medium heat. Add the diced chicken, season with salt and pepper, and cook until golden brown and cooked through, about 5-7 minutes. Remove from the skillet and set aside.
3. Cook Garlic: In the same skillet, add minced garlic and sauté for about 1 minute until fragrant, being careful not to burn it.
4. Add Cream: Pour in the heavy cream, stirring to combine. Bring to a gentle simmer.
5. Stir in Cheese: Add Parmesan cheese and crumbled feta cheese, whisking until melted and smooth. Continue to simmer for about 5 minutes.
6. Add Spice: Sprinkle in the crushed red pepper flakes. Stir to combine and adjust seasoning with salt and pepper as needed.
7. Combine Pasta and Chicken: Add the cooked pasta and sautéed chicken back into the skillet, tossing to coat everything in the creamy sauce.
8. Warm Through: Cook for another 2-3 minutes until heated through.
9. Garnish and Serve: Remove from heat, garnish with chopped parsley, and serve immediately.

With these straightforward steps, you can enjoy an incredible serving of Spicy Feta Chicken Alfredo in no time!