Spinach & Feta Gözleme

Traditional, savoury Turkish stuffed flatbread.

1 cup flour 1 tsp baking powder ½ tsp salt ⅓ cup plain water buffalo yoghurt 1 tsp olive oil 2 Tbsp warm water 1 Tbsp olive oil ½ onion 1 leek 1 garlic clove 1 chilli ½ tsp ground cumin ½ tsp smoked paprika ½ tsp ground coriander 200g baby spinach 1 pinch salt 1 pinch freshly ground black pepper 200g Dalewood feta 1 lemon