First, take two trays or pyrexes. Butter them well. If you don't want to use butter, you can use baking paper. Take the chickens in a deep bowl and add the sauce you've prepared for the chicken and spread it equally. While chickens are waiting on one side, put the chips in the rondo. Dip the chickens in the crushed chips from both sides. Place them in the tray. Then, cut the peeled potatoes as wedges. They must be in medium thickness. Place the potatoes on the tray as wll and set your oven to 180 degrees. When the oven is heating, prepare the sauce for potatoes. Mix all the ingredients for the potato sauce and pour them equally on potatoes. Put the chickens and tomatoes to the oven and heat them for 30-35 minutes until they're done. Enjoy!