Prepare: Using a rolling pin, gently flatten each biscuit into a thin circle.

Assemble: Add 3 chocolate pieces and marshmallow pieces to one half of each flattened biscuit.

Shape: Carefully fold the empty half over the filling and press edges firmly with a fork to seal.

Cook: Spray the calzones lightly with olive oil. Air fry at 375°F / 190°C for 3 minutes, then flip and continue cooking for 2 additional minutes until golden brown.

Serve: Allow to cool slightly before enjoying the melted, gooey filling.