Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
Cut each jalapeno in half lengthwise. Remove the seeds and membranes with a spoon. Wear gloves if you have sensitive skin.
In a medium bowl, combine the softened cream cheese, shredded cheddar cheese, chopped cooked bacon, garlic powder, salt, and pepper. Mix well until thoroughly combined.
Spoon the cream cheese mixture evenly into each jalapeno half.
Wrap each stuffed jalapeno half with a half-strip of bacon, securing it with a toothpick if necessary.
Place the jalapeno poppers on the prepared baking sheet.
Bake for 20-25 minutes, or until the bacon is crispy and the jalapenos are tender.
Let cool slightly before serving.
Notes
For a spicier popper, leave some of the seeds in the jalapenos. For a milder flavor, scrape out as many seeds and membranes as possible.