To make the dressing, whisk together the mayo and the yogurt, and season generously with salt and pepper. Add half of the crumbled gorgonzola to it.
Cut the iceberg wedge into quarters, then drizzle the dressing over each wedge. Chop up the bacon with a sharp knife. Sprinkle on the chopped bacon, the remaining crumbled gorgonzola, and red onion. That’s it! Serve and enjoy.