Mix the flour with the salt and sugar on the work surface and make a well in the middle. Pour oil, vinegar and a little water into the well and knead into a smooth, supple dough. Brush the dough with a little oil and cover and let rest at room temperature for about 30 minutes.
Then divide the dough into 4 portions and use a cloth to make each portion as thin as possible and then brush each portion immediately with a little melted butter.
Filling:
Mix the shredded chicken breast, diced feta and spring onion rings in a bowl. Season with salt, paprika and pepper. Spread a quarter of the filling in the lower part of each portion of the dough, leaving an edge of about 4 cm free on the left and right. Roll up the dough and shape each into a snail.
Place the snails on a baking sheet lined with baking paper and brush with a little melted butter. Bake for 30 minutes in the lower half of the 200 ° C top / bottom heat oven. Take the snails out briefly and brush with the remaining butter.