Prep the Pita: Take the pita halves and open them carefully to create pockets.
Layer the Foundation: Spread 1 tablespoon of tzatziki sauce inside each pita half; this acts as a barrier to keep the bread from getting soft.
Add Protein & Greens: Divide the spinach and the protein (chickpeas or grilled chicken) between the two pita pockets.
Incorporate Fresh Veg: Layer in the diced cucumbers, cherry tomatoes, sliced red onions, and Kalamata olives.
Final Touch: Top each pocket with a sprinkle of crumbled feta cheese and a remaining dollop of tzatziki for extra moisture.
Assemble: Place the stuffed pita halves in your bento box. Fill side compartments with extra cucumber slices or a few whole-wheat crackers to complete the meal.
Storage: Keep refrigerated until ready to consume.