Grilled Chicken Sandwich

chicken burger (46%), [chicken breast, water, acidity regulator: sodium lactate, potato starch, stabiliser: triphosphates, salt, wheat flour", spices, onion powder, sugar, maltodextrin, dextrose, garlic powder, flavourings (contains barley , soya), yeast extract, sunflower oil], sesame seeded bun, [wheat flour*, water, sugar, yeast, rapeseed oil, sesame seeds, salt, preservative: calcium propionate, emulsifiers: mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids , mono and diglycerides of fatty acids, antioxidant: ascorbic acid], mayonnaise, [rapeseed oil, water, pasteurised egg yolk, spirit vinegar, sugar, salt, black pepper, cornflour, garlic powder, onion powder, flavouring], chicken burger contains 85% chicken,"wheat flour with calcium, iron, niacin, thiamin,