For the chicken, mix the chicken, lemon, oregano, paprika and garlic together with a tablespoon of oil thoroughly, season with salt and pepper and cover. Marinate for at least 30 minutes.
For the flatbreads, mix the flour, baking powder and yoghurt with a pinch of salt to a smooth dough. Cover for 30 minutes.
For the tzatziki, grate the cucumber and dust with salt. Leave to drain in a sieve for 10 minutes, then squeeze out as much of the moisture as you can. Combine with all the other dip ingredients.
For the onion pickle, cover the red onion in vinegar and a pinch each of salt and sugar.
Get your grill really high, or light the barbecue. When hot, skewer your chicken and cook for 15 minutes or until cooked through. Leave to rest on one side while you portion the flatbread dough into 8 balls. Press into thin circles and cook for a minute or two on each side until puffed up. Serve the meat in the breads and top with lovely pickles, tzatziki and your favourite salad.