Cook bacon until crispy, then drain on paper towels.
Toast the 8 slices of bread.
Spread the Nutella on each slice of toasted bread, to taste.
Add lettuce leaves to 4 pieces of Nutella-spreaded toast.
Add slices of tomato on top of lettuce.
Arrange slices of bacon evenly on top of tomato.
Put the remaining 4 pieces of Nutella-spreaded toast on top and enjoy.