Slice the chicken lengthwise into about 2 inch wide strips. Pound the chicken pieces into about ¾ - 1 inch thickness. Pat dry with a paper towel and season on both sides with the salt, pepper, Italian seasoning, onion powder and paprika. You can go as generous on the seasoning as desired!
Heat a large skillet or sauté pan over medium high heat. Melt two tablespoons of butter in the heated pan. Add the minced garlic and cook for about 1 minute, stirring constantly until fragrant.
Add the chicken to the heated pan and sear for about 2 minutes per side, not touching it at all until flipping. Once the chicken is seared, remove from the pan and set aside on a plate. It will not be fully cooked at this time.
Add the remaining tablespoon of butter. Add the rice and cook to toast it slightly for about 1-2 minutes, stirring frequently so it doesn't burn or get stuck to the pan. Add in the broth and chopped spinach and stir to combine.
Bring the rice and broth to a gentle boil. Once it begins to boil, reduce heat to medium-low/low low heat,(whatever temperature maintains a low boil) add the chicken back into the pan, laying it gently over the rice, making sure it is not fully immersed in the rice. Cover and allow it to simmer for about 15-20 minutes or until all of the liquid is absorbed and the rice is tender. Chicken should also be an internal temperature of 165°F.
Once the chicken and rice is cooked, push the chicken to the side to add the parmesan and stir it to melt into the rice. Serve topped with more parmesan and freshly chopped parsley!