Preheat the oven to 400°F. Line a large rimmed baking sheet with aluminum foil. Place an oven-safe wire rack on top of the foil and set it aside.
Rinse the asparagus spears in cool water, pat dry, and trim the ‘woodsy’ end off of the asparagus spears. About 1 to 2 inches. Set aside.
In a small bowl, combine the garlic salt and black pepper. Set aside.
Place the trimmed asparagus into a shallow dish, drizzle with the olive oil and then sprinkle the spice blend over the top of the asparagus spears. Toss it all together to coat evenly.
Gather 4 asparagus spears together. Using one piece of the bacon, wrap the asparagus bundle making sure not to overlap the bacon too much. Place each bacon wrapped bundle onto the wire rack-lined baking sheet. Make sure to leave space between each bundle.
Cook the asparagus bundles for 25 to 30 minutes, or until the asparagus is tender and the bacon is crisp but not burnt.
Remove the tray from the oven and turn your oven to broil. Flip all of the bundles over and replace the baking sheet back into the oven, allowing the bottom side of the bundles to crisp up under the broiler for 2 to 3 minutes. Make sure you keep an eye so that you do not burn the asparagus.