For Chicken Filling:
In pan, add oil and onion (chopped) and garlic (chopped), sauté for 1-2 minutes

Add chicken mince and sauté until mince changes color.

Add tomatoes (chopped), tomato ketchup and mix well.
Add salt,red chili crushed,black pepper crushed,dried oregano,tomato paste and chicken stock or water,cook for 2-3 minutes.

Add capsicum,mix and set aside.

For White sauce:
In pan, add butter and let it melt, add all-purpose flour and mix well.

Gradually add milk and keep stirring and mix continuously.
Add salt and white pepper powder and cook until sauce thickens.

For Assembling:
Grease baking dish with oil or butter, spread white sauce, cover it with lasagna sheets, add chicken filling then again pour white sauce, sprinkle cheddar cheese and mozzarella cheese.
Repeat the same process.

Sprinkle cheddar cheese, mozzarella cheese, green Cabbage and dried oregano.