Step 1

In a large bowl, combine chicken, 1 tablespoon olive oil and cajun seasoning.

Step 2

Heat remaining 1 tablespoon olive oil in a cast iron grill pan over medium high heat. Add chicken and cook, flipping once, until cooked through, about 5-6 minutes on each side. Set aside and keep warm.

Step 3

In a large pot of boiling salted water, cook pasta according to package instructions; drain well.

Step 4

Melt butter in a saucepan over medium heat. Add garlic, and cook, stirring frequently, until fragrant, about 1-2 minutes.

Step 5

Gradually whisk in heavy cream and lemon zest. Cook, whisking constantly, until incorporated, about 1-2 minutes.

Step 6

Stir in Parmesan until slightly thickened, about 1-2 minutes. If the mixture is too thick, add more heavy cream as needed; season with salt and pepper, to taste.

Step 7

Stir in pasta and gently toss to combine.

Step 8

Serve immediately with chicken, garnished with tomatoes and parsley, if desired.