Pre heat oven to 200 degrees. Fry off onion till soft and add crushed garlic. When soft add chicken breasts and season. Cook chicken for a few minutes then add crushed oxo cube. Stir in and add chorizo. Fry off for a few minutes
Add the chopped peppers and courgettes, basil and tin tomatoes and squeeze of ketchup. Using the tomatoes can add a dash of water. Leave to simmer whilst making cheeses sauce
Make a roux using the butter and flour and gradually add the milk over heat. Then add cheese (keeping a little of the cheddar cheese aside for topping) till sauce is slightly thickened.
Lastly layer dish with chicken chorizo filling at bottom of dish followed by pasta sheets. On top of sheets add a layer of cheese sauce for chicken chorizo filling and another layer of pasta sheets. Top of with the rest of the cheese sauce. Cook for 10 minutes, remove top with remaining grated cheese and cook for further 10 minutes.