Heat a wide bottom frying pan and place a couple of tablespoons of grated parmesan into the pan. As soon as it begins to bubble and is golden underneath, remove with a spatula and place over a cupcake tin upside down to form the basket shape and leave to cool.
To make the dressing:
Place the anchovy paste, lemon juice, mustard and Worcestershire sauce in a bowl and mix (add minced garlic if you wish at this stage).
Add in the mayonnaise, parmesan cheese, salt and pepper and mix until combined.This dressing will keep in the fridge for up to one week.
Toss the iceberg lettuce in the Caesar dressing.Once hardened and cool, place the parmesan nests onto a platter and fill each one with the lettuce. Top with a few pieces of the diced cooked chicken.