01 - 
                Sprinkle both sides of chicken breasts with salt and black pepper.
              
              
              
                02 - 
                Heat olive oil in a large skillet over medium heat. Place chicken breasts in skillet and cook for 5 to 6 minutes per side until golden brown and fully cooked. Transfer chicken to a plate and set aside.
              
              
              
                03 - 
                Add butter to the same skillet. Once melted, add sliced mushrooms and sauté for 4 to 5 minutes until softened and browned.
              
              
              
                04 - 
                Stir in minced garlic and cook for 1 minute until fragrant.
              
              
              
                05 - 
                Pour in chicken broth and bring to a gentle simmer, scraping up any browned bits from the bottom of the pan.
              
              
              
                06 - 
                Stir in heavy cream, onion powder, and Italian seasoning. Simmer for 2 to 3 minutes allowing flavors to meld.
              
              
              
                07 - 
                Add fresh spinach leaves and cook until wilted, stirring frequently.
              
              
              
                08 - 
                Sprinkle grated Parmesan cheese over the sauce and stir until the mixture becomes smooth and creamy.
              
              
              
                09 - 
                Return cooked chicken breasts to the skillet, nestling them into the sauce. Simmer for an additional 3 to 4 minutes to heat through.
              
              
              
                10 - 
                Serve the chicken and sauce warm, ideally accompanied by rice, mashed potatoes, or pasta.