Preheat your oven to 400 F.
Line a baking sheet with parchment paper.
Lay the bacon on top of the parchment paper and bake in the oven for 15 to 20 minutes.
4 slices thick cut bacon
Drain excess fat and, when cool enough to handle, break the bacon into crumbles.
In a bowl, combine the tomatoes, chives, olive oil, vinegar, and season with salt and pepper to taste.
1 cup grape tomatoes, 1 tbsp. fresh chives. minced, 2 tsp. white wine vinegar, 1 tbsp. olive oil, Sea salt and freshly ground black pepper
Stuff the tomato-chive mixture into each endive leaf.
16 endive leaves
Sprinkle each stuffed endive leaf evenly with the crumbled bacon.