Boil the pasta in alarge pot of water according to the package directions for al dente. Drain and set aside, reserving a bit of the pasta water.
Add the chicken and chicken seasonings to a small bowl and toss to thoroughly coat the chicken.
Heat the olive oil over medium heat in a large skillet. Then, sear the chicken for 3 to 4 minutes on each side until the internal temperature reaches 165 degrees. Transfer the chicken to a plate.
Add the butter to the same skillet and let it melt. Then, add all the sauce seasonings, and simmer them for about a minute.
Add the flour to the skillet and mix well, scraping the bottom of the skillet.
Add the chicken broth and heavy cream. Then, add the spinach and whisk well. Simmer while whisking for 3 to 4 minutes until the sauce is rich and creamy.
Add the parmesan cheese and stir until completely melted. Then, continue cooking, stirring occasionally, until the sauce reaches your desired thickness.
Add the past and toss to coat evenly. Add a tablespoon of pasta water to thin the sauce if necessary.
Add the chicekn and gently stir to make sure everything is coated. Enjoy!