Bake flatbread in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 5 minutes. Wash the salmon, dab dry and cut into small pieces. Sprinkle with lemon juice.
Heat the oil in a frying pan. Fry the salmon for 3-4 minutes. Season with salt, pepper and some chilli. Cut avocado in half, remove core. Remove the flesh from the skin and cut into pieces.
Peel onion and cut into thin rings. Wash, clean and slice the tomatoes. Clean, wash and slice romaine lettuce. Peel garlic and press it through a garlic press.
Mix yoghurt, crème fraîche and garlic, season with salt, pepper, sugar and chilli. Mix salad ingredients and roasted sesame seeds. Cut the bread in half, cut one pocket in each and fill with the salad.
Arrange salmon kebab on plates. Add some sauce and garnish with parsley. Serve the rest of the sauce separately.