Step 1

Heat the oil in large wide pot over medium-high heat. Add the chicken and Cajun seasoning and cook, stirring occasionally, until the chicken just starts to change color and the spices are toasted, about 2 minutes.

Step 2

Add the peppers and onions and cook until they just begin to release some of their juices, 3 to 4 minutes. Stir in the garlic and cook until softened, 1 minute.

Step 3

Add the pasta, chicken broth and tomatoes and bring to a boil over medium-high heat. When it boils, continue to cook, stirring occasionally, until the pasta is al dente and the sauce is thickened and reduced by about half, about 15 minutes.

Step 4

Remove from the heat and add the cream cheese and 1 1/2 teaspoons kosher salt. Stir until the cream cheese is combined and melted. Don't worry if the sauce looks runny, it will thicken as it sits. Top with sliced scallions.