There is no high street smell quite like a Greggs chicken bake coming out of the oven — buttery pastry, creamy chicken, that golden flaky top. The problem is the numbers: the shop version is a full pastry commitment, and at well over four pounds each these days, it is a commitment for your wallet too. This copycat greggs chicken bake keeps everything you queue for — the creamy chicken filling, the crisp golden pastry — and rebuilds it for the air fryer with light puff pastry, lean chicken breast and a lighter creamy sauce. Each bake comes in around 280 calories and costs under £1.50 to make at home.…