Blackened Chicken Alfredo

Fill large, heavy-bottomed pot with 16 cups water. Place pot on stovetop over high heat and bring water to rolling boil.
When water begins to boil rapidly, add 1 tablespoon salt and stir to incorporate. Allow water to return to rolling boil.
Once water begins to boil rapidly once again, add 1 pound dry fettuccine to pot. Stir to incorporate, then boil pasta until al dente, approximately 1 to 2 minutes less than time indicated on pasta packaging.
Once pasta is al dente, pour water and cooked pasta through colander. Drain pasta well and set aside.

While pasta boils, place 1 pound boneless, skinless chicken breasts on cutting board. Sprinkle 1 tablespoon blackened seasoning onto chicken breasts, covering all sides of each chicken breast with seasoning. Use additional blackened seasoning as needed.
Place medium skillet on stovetop over medium heat. When pan is warm, add 1 tablespoon neutral cooking oil and continue heating, tilting and swirling pan occasionally to distribute oil across entire surface.
Once oil is hot and shimmery, place seasoned chicken breasts in skillet. Cook chicken 3 to 5 minutes, or until lightly blackened on one side. Flip chicken over and cook 3 to 5 minutes more, until lightly blackened on both sides and cooked through.
If desired, check doneness of chicken breasts with internal meat thermometer. Once chicken registers 160° to 163° Fahrenheit internally, transfer chicken to plate and set aside.

Wipe out skillet with paper towels and let skillet cool slightly. Before returning skillet to heat, add ½ cup unsalted butter and 1 ½ cups heavy cream to pan. Return skillet to heat and immediately reduce heat to low.
Simmer butter and cream over low heat while gently whisking, 2 minutes or until butter is melted.
Once butter is melted, add 2 teaspoons minced garlic and 1 tablespoon Cajun seasoning. Gently whisk mixture 1 minute.
Remove skillet from heat and add 2 cups grated parmesan cheese in small increments. Whisk mixture after each addition to incorporate cheese. Once all parmesan cheese has been incorporated, return skillet to heat. Simmer mixture 1 to 2 minutes or until warmed through.

Divide prepared pasta evenly between serving bowls or plates. Ladle alfredo sauce over pasta.
Slice chicken breasts into thin strips and top each serving of pasta with preferred amounts of blackened chicken. Serve immediately and enjoy.