Place chicken mince, corn kernels, zucchini, carrot, cheddar cheese, panko breadcrumbs, VEGEMITE, green onion and garlic in a bowl. Season with pepper. Mix well to combine.
Place 1 pastry half on a flat surface. Spoon 1/3 cup mince mixture along 1 long side of pastry. Brush edges with egg. Roll up from long side to form a log. Trim ends. Cut into 4 equal pieces. Repeat with remaining pastry, mince mixture and egg.
Brush tops of rolls with egg and sprinkle with sesame seeds. Line air fryer with baking paper, leaving a 1cm border to allow air to circulate. Cook on 200C, in batches, for 13 to 15 minutes or until golden and cooked through. Stand for 5 minutes. Serve with sweet chilli sauce.