Divide the dough into 4 equal pieces. On a lightly floured surface, flatten into mini pizza bases (each approx. 10 cm in diameter). Heat a little oil in a non-stick frying pan. Cook the pizza bases in batches over a medium heat for approx. 4 mins. on each side, remove, cover and set aside.
To cook the meat
Heat the oil in the same pan. Fry the cutlets for approx. 3 mins. on each side, remove, season with salt. Cut the meat into strips.
To make the sandwiches
Cut open the pizza rolls, fill with the strips of meat, tomatoes, feta and spinach. Mix the mint, lemon zest and lemon juice with the yoghurt, serve alongside.