Trim off the tough ends of the asparagus and place them on a sheet pan with the olive oil and salt. Toss to evenly coat then arrange in a single layer. Mince the cooked bacon and parmesan in food processor until crumbly then add the panko and pulse until combined. Sprinkle the bacon, parmesan, panko mixture evenly over the asparagus.Roast at 400 degrees for approximately 15 minutes, depending on the thickness of the asparagus. If the asparagus is really thin, start checking around 12 so that it doesn't over-cook. If it's really thick asparagus, roast for up to 18 minutes, though be mindful of not letting the crumble burn.