Prep:
- Season the chicken: Cut the chicken into bite-sized pieces and add to a medium bowl. Season with Cajun seasoning, kosher salt, black pepper and ground cayenne. Mix to coat, set aside.
- Prepare the rest of the ingredients: Chop the yellow onion, slice the red bell pepper, mince the garlic and slice the basil. Measure out the milk in a measuring cup and grate the Parmigiano Reggiano cheese using a box grater.
Creamy Cajun Chicken Orzo:
- Cook the orzo: Cook the orzo pasta pasta 2 minutes shy of the time specified on the package for al-dente pasta in a large pot of boiling salted water according to package instructions. (Or use the same deep large skillet you’ll use to make the pasta dish). Reserve ½ cup of pasta cooking water, then drain into a fine mesh strainer and set aside. (Tip: Run cold water over the pasta to prevent it from sticking and cooking further.)
- Cook the chicken: Heat ½ tablespoon of olive oil in a large deep edged skillet or sauté pan over medium-high heat. Add the seasoned chicken pieces and spread them out in the pan. Allow to sear for 1 minute, then flip the pieces and sear the other side for another minute or so. Sauté until just cooked. Transfer to a clean bowl and set aside.
- Sauté the aromatics: Heat 1 tablespoon each of olive oil and unsalted butter in the same pan over medium-high heat. Add the yellow onion and red bell pepper and sauté for a minute until slightly softened. Add the garlic and sauté for another minute until fragrant.
- Make the cream sauce: Add the all-purpose flour and whisk to combine for a minute to get rid of the floury taste. Reduce the heat to low and gradually pour in the milk while continuing to whisk.
- Stir in the seasonings: Stir in the Cajun seasoning, smoked paprika, ground cayenne, crushed red pepper flakes, dried oregano, dried thyme, kosher salt and black pepper.
- Add the cheese: Stir in the freshly grated Parmigiano Reggiano cheese until melted and the sauce starts to thicken.
- Mix in the baby spinach: Add the baby spinach and mix for 1-2 minutes until it wilts.
- Add the pasta and chicken: Add the cooked orzo, 2 tablespoons of reserved pasta water and Cajun chicken back into the pan. Mix until combined well and everything is evenly coated in the sauce. If the sauce thickens too much, add another tablespoon or two of reserved pasta water and mix until it coats the pasta evenly. Switch off the heat.
- Serve: Divide evenly onto plates and garnish with fresh basil and more grated cheese if desired. Serve immediately.