Chicken souvlaki

Name: Chicken souvlaki
Ingredients: 1¼ cups lukewarm water; 1½ tsp dry yeast; 1½ tsp castor sugar; 450g plain flour; ½ tsp sea salt; ½ cup olive oil, plus extra for brushing; 3 tbsp fresh lemon juice; 1½ tsp chopped fresh oregano; 2 tbsp olive oil; ½ tsp salt; 4 garlic cloves, minced; 500g boneless chicken thighs; ½ cup plain Greek-style yoghurt; 125g Greek-style feta cheese; 1 tbsp lemon juice; 1 garlic clove, minced; 1 Lebanese cucumber, seeded, coarsely grated and drained