Place a large pot or Dutch oven on the stove and turn the heat to medium-high. Let it heat up for a minute or two.
Add 1 teaspoon of olive oil to the hot pot. Then, add 1/2 cup of chopped onions, 1/2 cup of chopped green peppers, and 1/2 cup of chopped red peppers. Stir the vegetables and cook them for about 5 minutes, or until they become soft.
Add 2-3 minced garlic cloves to the pot. Stir the garlic into the vegetables and cook for another minute until it becomes fragrant.
Add 1 pound of ground chicken to the pot. Use a spoon or a meat chopper to break the chicken into small pieces. Cook the chicken for about 5-6 minutes, stirring often, until it’s fully cooked and no longer pink.
Sprinkle 1 tablespoon of chili powder, 1 teaspoon of cumin, 1 teaspoon of dried oregano, and some salt and pepper over the chicken. Stir well to mix the spices with the chicken.
Pour in 1/2 cup of chicken or vegetable broth, 15 ounces of drained chili beans, 15 ounces of drained black beans, 15 ounces of diced tomatoes and chilies, and 6 ounces of tomato paste. Stir everything together until well combined.
Turn the heat down to medium-low. Cover the pot with a lid and let the chili simmer for about 15-20 minutes. This allows all the flavors to blend together.
If you like your chili spicy, add 1 teaspoon of red cayenne pepper. Stir it in well. [optional]
Once the chili has finished simmering, turn off the heat and let it cool for a few minutes before serving.