1In a large pot, cook the bacon over medium heat until crispy. Remove the bacon and set aside, leaving the bacon fat in the pot.
Add the diced celery, carrot, and onion to the pot. Cook until the vegetables are tender, about 5-7 minutes.
Stir in the tomato paste, thyme, and black pepper. Cook for another 2 minutes.
Add the canned kidney beans and chicken broth to the pot. Bring to a boil, then reduce the heat and let it simmer for 20 minutes.
Crumble the cooked bacon and add it back to the pot. Stir well and let it simmer for another 5 minutes.
Taste and adjust seasoning if necessary. Serve hot.