Cut the chicken breast into bite-sized pieces.
Finely chop the onion and bell pepper.
Heat olive oil in a pan and stir-fry the chicken breast.
Once the chicken is cooked, add the onion and bell pepper, and stir-fry further.
Add brown rice and mix well.
Pour in low-sugar tomato sauce and season with salt and pepper.
Top with mozzarella cheese, cover with a lid, and melt the cheese.
Finish with parsley.