I don’t usually have too much of an issue with it, but I like messy ovens lol. You could move a rack above the center one and put another sheet tray above, but that’s more cleaning. Could lay a sheet of saran wrap over top of the bacon but then you would have to worry about it potentially sticking to the bacon.

But honestly I don’t notice a ton of grease popping when it cooks on the sheet tray with the parchment paper.