Dicing chicken breast into cubes is a common way to prepare bite-sized chicken pieces. You can dice the chicken when it is still raw or you can dice it after you cook it fully. The chicken recipe you use will determine if you should cut the chicken before or after cooking. When you cut the raw chicken, it won't retain the cubed shape after you finish cooking it, so don't let it bother you when your cooked chicken isn't visually perfect.
Cutting Raw Chicken
Wash your hands before you handle the food. Lay the chicken breast on a clean cutting board so the smooth side faces upward
Choose a flat knife instead of a serrated-edge knife. A flat edge knife will cut through the raw meat without catching on any of the stringy sections of the chicken breast.
Trim the fat away on the side of the chicken. Cut out any cartilage in the center of the chicken breast as well.
Cut the chicken breast lengthwise down the center. Place another cut on the left and the right of the center cut. Space them 1 inch from the center cut if the breast is large enough.
Create widthwise cuts along the width of the chicken spaced 1 inch apart. Start at the left side of the chicken breast and move towards the right until you dice the entire chicken breast.
Cutting Cooked Chicken
Wash your hands with warm water and soap. Move the cooked chicken to a clean cutting board once it cools fully.
Cut the chicken breast down the center lengthwise with a serrated knife. Serrated knives work better on solid foods as opposed to flat-edged knives.
Cut a line to the left and the right of the first, spaced out by 1 inch on either side of the first cut. Make additional cuts all along the width of the chicken spaced 1 inch apart from each other.