Cook the linguine pasta according to package directions until al dente. Drain and set aside
Season the chicken strips with Cajun seasoning. Heat olive oil in a large skillet over medium-high heat. Add the chicken strips and cook until browned on both sides, about 5-7 minutes. Remove the chicken from the skillet and set aside
In the same skillet, add the diced tomatoes and cook until the liquid has reduced by half, about 5 minutes
Add the heavy whipping cream to the skillet and stir to combine with the tomatoes. Bring the mixture to a simmer and cook for 5 minutes, stirring occasionally
Add the grated Parmesan cheese to the skillet and stir until melted and combined with the cream sauce
Add the cooked chicken strips back to the skillet with the cream sauce and stir to coat the chicken
Add the cooked linguine pasta to the skillet with the chicken and sauce. Toss to combine until the pasta is coated in the creamy Cajun sauce
Garnish with chopped fresh parsley and serve hot
Notes
Season the chicken well: When cooking the chicken, make sure to season it with cajun seasoning. This will give it a nice flavor that will help spice up the sauce and pasta.
Save some pasta water: When you drain the pasta, make sure to save about 1/2 cup of the cooking water. This starchy water can be added to the sauce later to make it thicker and creamier.
Taste and adjust the seasoning: Once you add the sauce to the pasta, taste it and see if it needs more salt, pepper, or cajun seasoning. You can always adjust if you like things a little more spicy
Use fresh parmesan cheese: Instead of using pre-grated cheese, grate fresh parmesan cheese for a better flavor.
Add the tomatoes towards the end: Add the diced tomatoes towards the end of cooking the pasta so they don't become too soft and mushy. This will keep them fresh and juicy.
Garnish with parsley: To add a little bit of color and freshness to the dish, chop up some fresh parsley and sprinkle it on top of the pasta before serving. It will add a nice herbaceous flavor that will complement the cajun seasoning.