Heat the oil in a large skillet over medium heat; add chicken,
salting and peppering to taste and browning on both sides until cooked through. Remove from skillet and keep warm.
Add spinach and garlic to the skillet; sauté for 1 to 2 minutes.
Slowly add half and half, blending well. Add Parmesan cheese and stir until melted.
Return chicken to the skillet and heat through.
Serve chicken over spinach mixture.