Cook the bacon. In a skillet over medium heat, cook bacon until deeply crisp.
Drain on paper towels and crumble. Save a teaspoon of bacon drippings if you want extra flavor in the dressing.
Prep the chicken. Shred or chop cooked chicken into bite-size pieces. Aim for a mix of small and chunky bits for great texture.
Mix the dressing. In a large bowl, whisk Greek yogurt, Dijon, lemon zest, 1–2 tablespoons lemon juice, grated garlic, a drizzle of olive oil, and honey if using.
Season with 1/2 teaspoon salt and several grinds of pepper.
Add the crunch. Stir in diced celery, minced red onion, and chopped fresh herbs. If using bacon drippings, whisk in now for a smoky note.
Combine. Fold in chicken and most of the bacon. Taste and adjust salt, pepper, and lemon.
If it’s too thick, loosen with a splash of water or more lemon juice.
Chill briefly. Cover and refrigerate for 20–30 minutes. The flavors meld and the onion softens a bit.
Finish and serve. Top with remaining bacon before serving. Spoon into lettuce cups, layer on toast, roll into a wrap, or serve over greens with cucumber and tomatoes.