Step 1, Prepare Chicken Filling.
Heat oil in a pan and sauté chopped onions until soft.
Add chicken cubes and cook for 5 minutes.
Add black pepper, salt, crushed red chillies, and oregano.
In a blender, blend tomatoes, water, and ketchup until smooth.
Add the blended mixture to the chicken and cook for another 5 minutes.
Add chopped capsicum and cook for 3 more minutes.
Set aside.
Step 2, Boil Lasagna Strips.
Boil water in a pot and add 2 tbsp oil.
Add lasagna strips and cook until 80% done.
Drain and set aside.
Step 3, Prepare White Sauce.
Melt butter in a pan.
Add flour and mix well.
Gradually add milk while stirring continuously.
Cook for 5 minutes until slightly thick.
Add oregano, salt, black pepper, and garlic powder.
Add cream and cheese slice.
Cook until the sauce becomes smooth and thick.
Step 4, Assemble Lasagna.
Grease a baking dish.
Add a layer of lasagna strips.
Spread chicken mixture.
Pour white sauce.
Repeat layers once more.
Top with mozzarella, cheddar cheese, oregano, and olives.
Step 5, Bake.
Preheat oven at 180°C for 15 minutes.
Bake with top and bottom heat for 35-45 minutes until golden and bubbly.
Serve hot.