Cut a thin slit down the length of each pepper and carefully remove the inner ribs and seeds, trying to keep the pepper itself as intact as possible.
In a small bowl, use a fork to mash together the cheddar cheese, cream cheese and garlic powder.
Stuff the cheese mixture into each pepper, closing up each pepper as much as you can after stuffing.
Wrap a slice of raw bacon around the outside of each pepper, securing with a toothpick if necessary.
Lightly spray each pepper with avocado oil.
Arrange the poppers on a large baking sheet and bake until the bacon is crispy, about 20 minutes. You can broil the poppers for a couple minutes at the end if you want to brown them more. Serve warm.
Notes
NOTE: The size of jalapenos can vary greatly. If you can't find large jalapenos, you can use 16 smaller ones (for 2 poppers per serving), each wrapped with a half slice of bacon. Start checking on them to see if they're done after 15 minutes.