Preheat the oven to 375 degrees and line a baking sheet with parchment paper.
Slice each jalapeño lengthwise, remove the seeds and membranes, and set the halves aside.
In a mixing bowl, combine the cream cheese, cheddar cheese, crumbled bacon, and garlic powder until evenly mixed.
Spoon the cheese mixture into each jalapeño half and press gently to fill.
Unroll the crescent dough and cut it into thin strips. Wrap the strips around each stuffed jalapeño, leaving small gaps for the mummy effect.
Place two olive slices on each wrapped jalapeño to form eyes.
Arrange the mummies on the baking sheet and bake for 15 to 18 minutes until the dough turns golden brown.