Preheat your oven to 400 degrees Fahrenheit and arrange your tri-folded bacon pieces onto the sheet pan. Use regular bacon, as thick cut-bacon will not cook properly.
You can jam these bacon packets as closely as you like, as this won't affect how they cook. This lets you fit almost two pounds of bacon onto one sheet pan.
Bake them for 20 minutes, flip them, then bake for another 20 minutes. The bacon will be chewy rather than crunchy, so if you want crispy bacon, you might want to skip this trick.