Spread mayonnaise on one side of each slice of toasted bread. Arrange the romaine leaves on 4slices of the toast. Arrange 2slices of cooked meatless bacon on the romaine leaves. Then place 1-2slices of tomato over the bacon, add a slice of onion, and place 1-2slices of avocado on top. Divide the cooked meatless chicken evenly on top of each sandwich. Cover each sandwich with the remaining slices of toast, mayonnaise side down.
Using your hand, press the sandwiches just enough so they hold together, but don’t worry if some of the ingredients slide a bit; just push them back into place. Insert two little wooden or other skewers into each sandwich, about an inch from the end, to hold it together. Then use a large, sharp knife to cut each sandwich in half on the diagonal. Enjoy it.