Heat olive oil in a cast iron skillet over medium-high heat.
Cut chicken breasts into large chunks, salt & pepper to taste.
Cook chicken until really golden brown on both sides and almost cooked through.
Once the chicken is browned, remove from skillet, and add the chicken broth and heavy cream to de-glaze the pan. Add garlic powder, and parmesan cheese, stir together.
Add the chicken back into the pan, top with all the spinach. It might seem as if the spinach will not all fit but pile it high, cover with a large pizza pan (or something similar) and after 2-3 minutes it will be wilted.
Once the spinach is wilted, remove from heat, push the spinach off the chicken and into the cream. Serve and enjoy!
Notes
Since different foods are different sizes, nutritional facts are approximate and may not be exact but they are as close to accurate as I can calculate.