Step 1

Combine the ingredients for the Cajun seasoning in a small bowl. Cut the chicken into 1/2 to 3/4-inch cubes. Place the cubed chicken in a bowl, pour the Cajun seasoning over top, and stir to coat the chicken in spices.

Step 2

Add the olive oil and butter to a large deep skillet. Heat the oil and butter over medium-high until the skillet is very hot and the butter is melted and foamy. Add the seasoned chicken to the skillet and cook for a couple minutes on each side, or just until the outside gets some color. The chicken does not need to be cooked through at this point.

Step 3

Add the diced yellow onion to the skillet and continue to sauté for about 2 minutes more, or just until the onion begins to soften. Allow the moisture from the onion to dissolve any browned bits from the bottom of the skillet.

Step 4

Next, add the pasta, fire roasted diced tomatoes (with the juices), and chicken broth to the skillet. Stir just until everything is evenly combined, then place a lid on top and allow the broth to come up to a boil.

Step 5

Once boiling, turn the heat down to medium-low and let the pasta simmer for about ten minutes, stirring every couple of minutes, until the pasta is tender and the liquid is thick and saucy.

Step 6

Add the cream cheese to the skillet in chunks, then stir until it has melted into the sauce. Top the pasta with sliced green onions and serve.