Combine the chili powder, paprika, cumin, oregano, onion powder, garlic powder and salt in a small bowl.
Place the chicken breast in a large slow cooker and rub the seasoning on the chicken.
Add the chicken broth, diced tomatoes with green chilies, sriracha, tomato paste, diced onions, corn, kidney beans and black beans to the slow cooker and stir to combine.
Cook on low for 8-10 hours or on high for 4-5 hours.
Before serving, reach two forks in the slow cooker and shred the chicken directly in the soup, or remove the chicken from the soup, shred and return to the soup.
Ladle the enchilada soup into bowls and serve topped with your favorite toppings.