Heat a heavy bottomed Dutch oven to medium-high heat. Add the ground beef and brown for about 3 minutes, stirring often. With a slotted spoon, remove the ground beef from the pot, and place in a bowl and set aside. There will be grease left in the pot to cook the vegetables in, don't drain it.
Heat the same Dutch oven to medium heat. Add the chopped onion and bell pepper, cook for 4-5 minutes, stirring often.
Add the kosher salt, chili powder, cumin, oregano, and smoked paprika. Cook, stirring often for 1 minute.
Turn the heat to medium-low and add the garlic and tomato paste and cook for another 1 minute, make sure to stir often. Then add the cooked ground beef, canned tomatoes, beef stock and bay leaf.
Bring the pot to a boil, then reduce heat to low, cover with a lid. Let it simmer for 25 minutes.
When it's done cooking, turn off the heat, remove the bay leaf, stir and taste. Adjust seasoning if needed to your preference.