In a large bowl, combine the ground beef with 1½ tablespoons of chili powder.
Heat a large Dutch oven or heavy-bottomed pot over medium-high heat.
Brown the seasoned beef with the diced onion, jalapeño, and garlic until the meat is fully cooked.
Drain excess fat if necessary.
Add the green bell pepper, remaining chili powder, cumin, crushed tomatoes, diced tomatoes, kidney beans, beef broth, tomato paste, and brown sugar.
Stir well until everything is evenly combined.
Bring the mixture to a gentle boil.
Reduce the heat to low and simmer uncovered for 45–60 minutes, stirring occasionally until the Best Chili Recipe reaches your preferred thickness.
Taste and season with salt and black pepper.
Serve hot with your favorite toppings.