Preheat air fryer to 400 degrees Fahrenheit for 5 minutes.

Toss the trimmed and halved brussels sprouts (and any leaves that fall off) with the olive oil and salt. Arrange them in a single layer in the air fryer basket (or trays).

Cook for 15 minutes, tossing them at 7 minutes. Since air fryers vary, begin checking for doneness at 12 minutes. The finished sprouts with be golden and crispy on the outside, fork-tender through the middle.

Immediately after cooking, drizzle with the syrup and vinegar, then toss with the bacon crumbles. Serve immediately.