Crockpot Chicken Chili

Name: Crockpot Chicken Chili
Ingredients: 2 chicken breasts, uncooked; 1 can black beans, drained and rinsed; 1 can Cannellini beans, drained and rinsed; 1 can diced tomatoes, drained and rinsed; 2 cups chicken broth; 1/2 yellow onion, diced; 1/2 cup sour cream, you can always substitute for plain Greek yogurt!; 1 clove garlic, minced; 1/2 teaspoon cumin; 1/2 teaspoon paprika; 1/2 teaspoon mustard powder; 1/2 teaspoon garlic powder; 1 1/2 tablespoon chili powder, more to taste; salt and pepper, to taste; Cholula, to taste; Avocado, sour cream and green onions for garnish