Cut the chicken into bite-sized pieces.
Finely chop the tomato and onion.
Heat olive oil in a pan and stir-fry the chicken.
Add the onion to the chicken and sauté together.
Add the chopped tomatoes and tomato sauce; simmer.
Boil the gnocchi in boiling water, then drain.
Add the gnocchi to the tomato chicken sauce and sauté for another 2-3 minutes.
Season with salt and pepper.
Top with Parmesan cheese and basil to finish.