Heat olive oil in a skillet. Sauté onions, garlic, and poblano pepper until soft.
Add all seasonings, currants, and tomatoes with green chilies. Simmer until thickened.
Stir in diced cooked chicken and optional cheese. Let cool.
Prepare the dough by mixing flour, salt, sugar, and butter. Add egg and cold water until it forms a dough.
Roll out dough and cut into circles. Fill each with chicken mixture.
Fold and seal with a fork. Brush tops with egg wash.
Place on a lined baking sheet and bake at 400°F (200°C) for 20–25 minutes until golden brown.
Let them cool slightly before serving with dip or salsa.