Heat the avocado oil in a medium pot or Dutch oven over medium-high heat.
Add the diced yellow onion and red bell pepper, sautéing for 5 minutes until the vegetables are softened and slightly charred.
Add the ground beef to the pot, breaking it up with a wooden spoon, and cook until fully browned.
Carefully drain any excess fat from the pot to keep the dish clean and lean.
Stir in the smoked paprika, chili powder, cumin, sea salt, and black pepper, coating the meat and vegetables thoroughly.
Pour in the tomato puree, kidney beans, and water, stirring to combine all ingredients.
Reduce the heat to low, cover the pot, and simmer for 15 to 20 minutes to allow the flavors to meld and the chili to thicken.
Serve hot in a bowl, optionally garnished with fresh herbs or a squeeze of lime.