Rinse the chicken fillets in cold water and pat dry. Flatten the meat and turn it all over in the juice of half a lemon. Then salt and pepper. Now heat a little oil in the pan and add the fillets.
Add the rosemary, garlic and chili peppers to the pan (if you want, you can of course also eat it later). Turn the meat several times until it has a nice color.
Melt the butter and mix with olive oil, chili powder and another squeeze of lemon juice. Brush the fillets with it and serve hot. A herb butter baguette and lamb`s lettuce can be served very well with it.