Mix brown rice with a little salt and sesame oil.
Boil the chicken breast and shred it finely.
Julienne cucumber, carrot, and spinach, then blanch them in boiling water and squeeze out the moisture.
Evenly spread brown rice over the seaweed sheet.
Place the shredded chicken breast, cucumber, carrot, and spinach on top of the rice.
Roll it tightly and seal the edge with a bit of water.
Cut into bite-sized pieces.