Simple ingredient, this is all you need!
In the large non-stick skillet, heat olive oil; sauté onion until golden, five minutes.
Wilt spinach (steam or heat damp in pan); stir in lemon zest, feta, salt and pepper.
Put the mixture on top of chicken, roll up and insecure with toothpicks.
Put in oven baked for 10 minutes and then take it out.
In same skillet, heat remaining oil over medium-high heat. Cook chicken, turning occasionally until golden brown and cooked through, about 10 minutes
Done! Serve with rosted brussels sprouts and tomatoes. Yum!