If using canned crushed tomatoes, skip this step. Else if using fresh tomatoes, refer section 'STEPS TO MAKE MOZZARELLA CHICKEN' in the post above.
Preheat oven at 200-degree Celsius.
Heat a heavy bottom oven safe pan. Add oil.
When the oil is hot, sear chicken breast 2-3 minutes each side till golden sear mark appears.
Remove Chicken from the pan and keep aside covered.
To the same pan add finely chopped onion. Cook 1-2 minutes.
When onion softens and turns translucent add minced garlic. Saute for 30 seconds.
Add finely chopped red bell pepper. Cook for a minute.
Add crushed tomatoes, oregano, basil, red chilli flakes, balsamic vinegar, salt and pepper. Mix well.
Arrange chicken in a single layer. Top with shredded cheese.
Bake in upper third part of the oven for 8-10 minutes, until cheese melts and brown spots start to appear.