Bring 250 ml of water, 1 tablespoon of oil and 1 teaspoon of salt to the boil in a large pan. Remove from heat and stir in the couscous. Let it swell for 5 minutes. Wash and clean the tomatoes.
Wash and clean the cucumber, quarter it lengthwise and cut into slices. Peel and chop onion. Wash parsley, shake dry and chop. Mix the couscous, tomatoes, cucumber, onion, parsley, 3 tablespoons of oil and lemon juice, season with salt and pepper, set aside.
Wash the meat, dab dry. Season with salt and pepper. Heat 2 tablespoons of oil in a pan and fry the meat for about 5 minutes on each side. Dust with cinnamon and fry briefly. Wash the mint, dab dry and cut into fine strips.
Mix yoghurt with mint, season with pepper. Season salad once again. Serve with chicken filet and yoghurt. Garnish with lemon wedges.