Slice each chicken breast horizontally to create four thin cutlets.
Season both sides with salt and black pepper.
Lightly coat each piece with flour.
Heat a large skillet over medium heat for 2 minutes.
Add olive oil and place the chicken in the hot skillet.
Cook for 5 minutes without moving the chicken to develop a golden crust.
Flip the chicken, reduce heat to medium-low, and cook another 5 minutes or until the internal temperature reaches 165°F (74°C).
Transfer the chicken to a plate.
In the same skillet, pour in the heavy cream and add minced garlic. Bring to a gentle boil while scraping up the flavorful browned bits from the pan.
Stir in the Parmesan cheese until completely melted and smooth.
Add the spinach and cook just until wilted.
Taste and season with additional salt and pepper if needed.
Return the chicken to the skillet and spoon the creamy spinach sauce over each piece, leaving some of the golden crust visible.
Garnish with fresh thyme and serve immediately. This Creamy Spinach Chicken pairs beautifully with mashed potatoes, pasta, rice, or crusty bread.