So this baking bead chain is a must to make the perfect quesadillas. Air fryers have a super powerful powerful fan in them to circulate the hot air. This helps the food to cook quickly and evenly, but it means that anything light can get thrown around during cooking. The baking beads weigh the tortilla down and keep it in place. Without the chain, the top tortilla will lift up and fold over on itself, and the shredded cheese will fly up into the fan. The beads also help to keep the tortillas flat and not puff up.