Preheat a large nonstick skillet over medium heat.
Season chicken breasts with salt, pepper and garlic powder.
Spray the pan with olive oil spray. Add the chicken breasts and cook 3 minutes on each side. Remove the chicken from the pan and set aside.
Spray the pan with olive oil spray and add the minced garlic. Cook for 1 minute.
Add the chicken broth and half and half. Let it come to a light simmer then stir in the Parmesan cheese and Italian seasoning.
Add the tomatoes and spinach and cook until the spinach is wilted.
Place the chicken back in the pan and let it cook 3 minutes.