Use a heavy rolling pin or meat mallet to pound the chicken breasts to an even thickness. Season the chicken with salt, Italian seasoning, pepper and paprika on both sides.
Heat a skillet with avocado oil over medium-high heat. Once hot, cook the chicken in the pan for 3 to 4 minutes per side. Remove the chicken from the pan and set aside on a plate, cover loosely with foil to keep warm. NOTE: The chicken will not be cooked through at this point, you're just wanting to have a nice golden sear on both sides.
To the hot skillet, add in the garlic and cook until fragrant, about 30 seconds. Splash in the chicken broth and scrape the bottom of the pan, releasing any browned bits (loads of flavor!). Reduce the heat to medium-low and pour in the heavy cream and parmesan cheese. Stir to combine.
Add in the sun dried tomatoes and baby spinach. Nestle the chicken breasts into the creamy sauce and let the mixture simmer, stirring occasionally for an additional 5 to 10 minutes, or until the chicken reaches an internal temperature of 160 degrees.
Serve the chicken and creamy sauce over rice, noodles. mashed potatoes or with gnocchi. Enjoy!