Spread the bacon slices on one side of a sheet pan. On the other side, place the chopped red onion, sprinkle with a pinch of salt and pepper, and give it a light spray of cooking oil. Roast at 425°F for about 15 minutes, or until the bacon is crispy. Once done, allow to cool slightly before chopping.
In a large mixing bowl, whisk together light mayo, Greek yogurt, apple cider vinegar, paprika, garlic powder, and onion powder. This creamy base will provide just the right balance of tanginess and smoky flavor for your salad.
Add the cooked chicken, halved cherry tomatoes, chopped scallions, and roasted onions to the dressing. Gently mix until all the pieces are evenly coated. Finally, crumble or chop the roasted bacon and fold it into the salad for that signature BLT crunch.