Cut the chicken breast, cabbage, shrimp, and tuna into bite-sized pieces.
Heat oil in a pan and stir-fry the chicken breast.
When the chicken breast is cooked, add the shrimp and stir-fry together.
Add the cabbage and continue to stir-fry until the cabbage softens.
Add the tuna and season with salt and pepper.
Top the rice with the cooked ingredients to finish.