Ensure chicken is fully cooled to below 40°F before assembly. Slice or cube into bite-sized pieces approximately 3/4-inch in dimension.
Wash all produce thoroughly. Cut vegetables into appropriately sized pieces—larger for those at the bottom (near the dressing) and smaller for middle layers.
Begin layering with the dressing at the bottom (3-4 tablespoons per jar), creating your moisture barrier.
Add dense, moisture-resistant vegetables like cherry tomatoes, cucumbers, or bell peppers directly on top of the dressing.
Place your prepared chicken breast pieces in the middle layer, creating a substantial protein core. If using beans or legumes, add them in this layer as well.
Layer remaining vegetables and any cheese components, keeping in mind texture and moisture content.
Fill the remaining space with your leafy greens, leaving 1/2-inch headspace at the top. Do not compress greens.
Ensure the jar rim is clean and free of any food particles. Secure lid tightly with ring until resistance is met, then tighten slightly more to ensure a proper seal.
Store jars upright in refrigerator at 34-38°F for up to 5 days.
When ready to eat, shake vigorously to distribute dressing or invert contents into a bowl.