Pour the whole box of cereal in a huge bowl. I mean the biggest bowl you can find. It helps to have a lot of room to mix so that you don't crush a lot of the cereal. Add all of your bacon into the bowl, and mix it all gently in. use your spatula to scoop out all of the chocolate mix onto the cereal. At first it might not seem like it, but there will be enough. Mix this slowly and gently with a big spoon until all of the ingredients are evenly covered with chocolate.
Note: You could use Chex cereal, but Crispix seems to be the traditional ingredient, and I believe that it has more volume in the middle, which makes it's crunch and taste superior.