Gather all your tools: a slow cooker, knife, cutting board, ladle, and tongs.
Dice the chicken breasts into 1-inch pieces, and finely chop the onion and garlic. Open the canned tomatoes and set everything nearby.
Place the chopped onion and canned diced tomatoes (with juice) into the bottom of the slow cooker. Give it a gentle stir to combine the flavors.
Add the seasoned chicken pieces on top of the vegetables, then sprinkle the chili powder, cumin, and smoked paprika evenly over everything.
Pour the chicken broth over all the ingredients, just enough to cover the solids. This helps everything cook evenly and stay flavorful.
Cover the slow cooker with its lid and set it to low for 6-8 hours or high for 3-4 hours. As it cooks, the house will fill with smoky, spicy aromas.
Once the cooking time is up, check that the chicken shreds easily with a fork. The broth should have thickened slightly and look rich and inviting.
Use tongs or a fork to shred the chicken directly in the slow cooker, stirring it into the flavorful broth for even coverage.
Break the corn tortillas into small pieces and stir them into the soup. Allow the soup to simmer uncovered for 10 minutes, so the chips become crispy and absorb the flavors.
Taste the soup and adjust the seasoning if needed. Squeeze fresh lime juice into the pot for brightness, then serve hot.
Ladle the soup into bowls, garnish with chopped cilantro, and add extra lime wedges. Enjoy the smoky, hearty flavors with a satisfying crunch from the tortilla chips.