Cook bacon pieces in a large pan over medium-high heat until crisp; remove bacon and drain on paper towel, reserving drippings in pan.
Add pearl onions to pan; sauté 4 minutes or until beginning to brown.
Add Brussels sprouts to pan; sauté 3 minutes or until beginning to brown.
Stir in radicchio; sauté 2 minutes or until wilted and heated through.
Remove from heat and drizzle with honey. Crumble reserved bacon and add to pan; stir well to combine.
Season with salt, to taste.