For the marinade use мyonnaise, spices (salt, pepper, favorite herbs), maybe a little lemon juice. For 2-3 hours or overnight. Then cover the baking tray with aluminum foil. Put 3-4 slices of potatoes. Put 3-4 bamboo skewers into them. On skewers alternately put chicken filet, onion slices and potatoes. Brush the layers with marinade. On top of "tower" we put the rest of marinade and we can cover the top with foil not to burn. Put it all in the oven at ~180C (~350F) for ~60 minutes.