Heat the olive oil in a medium pot over medium-high heat.
Add the diced onion and bell pepper, sautéing until the vegetables are softened and translucent.
Add the ground beef to the pot, breaking it up with a wooden spoon, and cook until it is fully browned.
Stir in the minced garlic, chili powder, smoked paprika, cumin, sea salt, and black pepper, cooking for one minute until fragrant.
Pour in the diced tomatoes, tomato puree, and rinsed kidney beans, stirring to combine all ingredients.
Bring the chili to a gentle simmer, then reduce the heat to low and cover.
Let the chili cook for 15 minutes, allowing the flavors to meld and the sauce to thicken slightly.
Serve hot in a bowl, optionally garnished with fresh herbs if desired.