Place plastic wrap over each chicken breast and pound to about ½-inch thickness. Pat dry.
Mix the dredge ingredients in a bowl. Coat each chicken breast evenly and shake off excess.
Heat butter and olive oil in a skillet over medium-high heat.
Add chicken, cover, and cook for 4–5 minutes per side until golden and cooked through. Remove and set aside.
Turn off heat, add chicken broth, then return heat to medium. Deglaze the pan, scraping up browned bits. Reduce by half (6–7 minutes). Add garlic in the last minute.
Warm the half and half slightly, then add gradually while stirring. Let it gently bubble, then reduce heat.
Stir in cream cheese until smooth.
Add spinach and cook until wilted. Stir in lemon juice if using.
Return chicken to the skillet and spoon sauce over it. Cover and heat through.
Garnish with parsley and serve.
This Chicken Florentine recipe delivers creamy, savory perfection in every bite.