Cut aged kimchi, chicken breast, and onion into bite-sized pieces.
Heat olive oil in a pan and sauté the onions.
Add the chicken breast and cook until done.
Add the aged kimchi and stir-fry together.
Add the oatmeal and mix well with the other ingredients.
Pour chicken stock or water, then simmer over medium-low heat while stirring.
Taste and season with salt and pepper.
Top with cheese and parsley to finish.