01 - Preheat oven to 400°F.
02 - Pat chicken breasts dry and season both sides with salt, pepper, and Italian herbs.
03 - Heat olive oil in a large oven-proof skillet over medium-high heat. Sear chicken breasts for 2-3 minutes per side until golden. Remove and set aside.
04 - Reduce heat to medium. In the same skillet, melt butter, then add garlic and cook for 30 seconds until fragrant.
05 - Add spinach and sauté until just wilted, about 2 minutes.
06 - Stir in heavy cream, lemon juice, and lemon zest. Bring briefly to a simmer.
07 - Sprinkle in Parmesan cheese and stir until melted and sauce thickens slightly.
08 - Return chicken breasts to skillet, nestling them into the spinach sauce. Transfer skillet to oven and bake 12-15 minutes, until chicken is cooked through.