In a non-stick pan add a small amount of water and saute the mushrooms and the tomatoes. Next, add the spinach and cook briefly (until it’s wilted) and pour your wine and leave to reduce a bit to form your sauce.
For the chicken fillets:
Open your fillets in half (like a sandwich) and add salt & pepper. Put in one slice of cheese in each and 1 – 2 tablespoons of the sauce (with some liquid) and close your fillets. Put some salt & pepper on the outside, along with your lemon zest, sweet paprika & garlic powder. Wrap it in foil and bake in a preheated oven at about 180 degrees Celsius until the chicken is cooked through (around 30 minutes).
Once it’s done you can drizzle on the remaining of your sauce and serve with the sides of your choosing and…enjoy!