Next, slice chicken breasts in to bite size pieces. Place chicken pieces in a bowl and add Yoshida's until it covers the chicken- add extra if you like to have leftover sauce to poor on rice. (If using chili peppers, add about 5-8 of these to the marinade now. Leave whole for a milder spice or for a spicier flavor crack in 1/2, either disposing of seeds or adding seeds as well to taste).