1Lay out the 8 slices of whole wheat bread on a clean surface.
Spread 1 tablespoon of hummus on each slice of bread.
Evenly distribute the shredded lettuce over 4 slices of bread.
Place the sliced tomatoes on top of the lettuce.
Add the sliced cucumbers on top of the tomatoes.
Layer the thinly sliced red onions over the cucumbers.
Add the thinly sliced bell peppers on top of the red onions.
Sprinkle salt and pepper to taste over the vegetables.
Place the remaining 4 slices of bread on top to form sandwiches.
Cut each sandwich in half and serve immediately.