How to portion baked chicken into 4 ounces.
Have containers, kitchen scale, and baked chicken ready.  Tare the scale with an empty container, then add chicken until the scale reads 4 ounces.  Replace the filled container with an empty one and repeat.
Have containers, kitchen scale, and baked chicken ready.  Tare the scale then add chicken into an empty container until the scale reads 4 ounces.  Replace the filled container with an empty one and repeat.