To make this Lentil Chili Recipe gluten free, confirm that the bacon, chili powder, cumin, oregano, coriander, tomato paste, diced tomatoes, V-8 or tomato juice, and semisweet chocolate are certified gluten free or processed without gluten cross-contamination. Use gluten-free broth if replacing the hot water with broth. Serve with gluten-free toppings and avoid regular crackers, bread, or flour tortillas unless they are labeled gluten free.