Face lettuce appears in Japan, with the face of Death Note’s Light Yagami, but why?

“Lettuce that’s looking at you like it wants you to buy it.” Lettuce is one of those foods where the individual parts of the plant we eat are distinct from the harvestable foodstuff as a whole, which is why we refer to “leaves” and “heads” of lettuce.

But while you can find heads of lettuce […] ...