Brown the turkey by heating olive oil in a skillet over medium-high heat, and sauté ground turkey until golden brown for 5-7 minutes.

Chop the yellow onion, red bell pepper, and yellow bell pepper into small pieces as the turkey cooks.

Transfer the browned ground turkey to the crockpot and combine with chopped onions and peppers.

Pour in tomato sauce and diced tomatoes, and stir well to combine all ingredients.

Add drained black beans, kidney beans, and frozen corn, stirring to blend the ingredients together.

Season with chili powder, cumin, smoked paprika, and salt and pepper to taste, mixing thoroughly.

Cover crockpot and set to cook on high for 4 hours or low for 6 hours.

With 15 minutes remaining, taste and adjust seasonings as needed.

Serve in bowls, optionally garnished with toppings like cheese, avocado, or fresh cilantro.