Wash and dry the cucumber, bell peppers, tomatoes, and red grapes. Cut the cucumber into slices, the bell peppers into strips, and halve the cherry tomatoes if desired.
Slice the oven-roasted chicken breast into bite-sized strips or cubes.
Take two large bento-style meal prep containers. Divide the 4 oz of Genoa beef salami and 4 oz of chicken breast evenly into the main compartments of each container.
Pour the 1/4 cup tzatziki dip and 2 tbsp Greek dressing into small, lidded sauce containers to prevent the other ingredients from getting soggy. Place one in each bento.
Arrange the prepared vegetables (1/2 cup cucumber, 1/2 cup bell peppers, 1/2 cup cherry tomatoes), 1/4 cup marinated artichoke hearts, 1/4 cup mixed olives, and 1/2 cup red grapes in the remaining sections.
Tuck the 2 oz of fresh mozzarella balls into the vegetable sections and sprinkle the 2 tbsp of crumbled feta cheese over the tomatoes and cucumbers.
Pack the 1 cup of pita chips and 2 mini pita breads in separate dry bags or containers to keep them crisp until serving.