They need to have the bullet eating scene from the silver age.

So some one off yet still big time mob boss wanted to kill Kent for the same reason.

Hires a hit man for it. Set the scene at a nice dinner with Lois and they're talking and eating but the sniper takes a shot and course this is superman, but he can't make a scene in front of EVERYONE so he basically eats the bullets and the hit man can't get him and quickly quits and runs off telling the guy that he literally ate bullets for dinner and Kent is not one to be messed with.