Cook the Bacon: In a skillet, cook the chopped bacon over medium heat until crispy. Remove and set aside, leaving the bacon fat in the pan.
Sauté the Vegetables: Add the chopped onion and bell pepper to the skillet and sauté until softened, about 5 minutes.
Combine Ingredients: Add the canned baked beans to the skillet with the vegetables. Stir in the cooked bacon, brown sugar, Dijon mustard, and barbecue sauce.
Simmer: Reduce the heat to low and let the beans simmer for 10-15 minutes, allowing the flavors to meld.
Season and Serve: Taste and adjust seasoning with salt and pepper. Serve hot.