Cut the shishito peppers and chicken breast into bite-sized pieces.
Finely chop the onion and garlic.
Heat olive oil in a pan and sauté the garlic and onion.
Add the chicken breast and stir-fry until cooked through.
Add the shishito peppers and stir-fry briefly.
Season with soy sauce, oligosaccharide, and pepper.
Place the stir-fried ingredients over rice to complete the rice bowl.