Break the eggs carefully in a jug, now add milk,green chilli,carrot,green onion,black pepper powder and salt and whisk it properly.
Grease fry pan with olive oil and pour egg mixture into pan and cook for few seconds until the bottom of the omelet is lightly set. Lift and fold one edge with spatula and pour egg mixture little more and cook for few seconds.
Add mozzarella cheese slices and chicken boiled & shredded and continue lifting edges of omelet.
Pour remaining egg mixture and add chicken shredded, flipping remaining edge over filling as omelet leaves pan.
Cut into desired pieces.