01 - Preheat oven to 400°F. Pat chicken breasts dry with paper towels.
02 - Season both sides of the chicken breasts evenly with salt, black pepper, and dried Italian herbs.
03 - Heat olive oil in a large oven-proof skillet over medium-high heat. Sear chicken for 2-3 minutes per side until golden brown. Remove from pan and set aside.
04 - Reduce heat to medium. In the same skillet, melt butter and add minced garlic. Sauté for 30 seconds until fragrant.
05 - Add fresh spinach to the skillet and sauté for about 2 minutes until just wilted.
06 - Stir in heavy cream, lemon juice, and lemon zest. Bring the mixture to a brief simmer.
07 - Sprinkle Parmesan cheese into the skillet and stir constantly until melted and the sauce has slightly thickened.
08 - Return chicken breasts to the skillet, nestling them into the spinach sauce. Spoon sauce over the chicken. Transfer skillet to the oven and bake for 12-15 minutes until internal temperature reaches 165°F.
09 - Serve hot, optionally garnished with extra lemon zest or shaved Parmesan.