Season the chicken: Place chicken in the crockpot. Sprinkle taco seasoning over the top.
Add salsa, broth, onion, and garlic. Stir gently to coat.
Add beans and corn: Scatter black beans and corn over the chicken. Don’t worry about mixing perfectly—everything will meld as it cooks.
Cook low and slow: Cover and cook on Low for 4–6 hours or High for 2.5–3.5 hours, until the chicken is very tender and shreds easily.
Shred the chicken: Transfer chicken to a cutting board and shred with two forks.
Return it to the crockpot and stir to soak up the juices. Taste and adjust seasoning with salt, pepper, or extra spices.
Prep the chips and cheese: Preheat your oven to 375°F (190°C). Spread a generous layer of tortilla chips on a large baking sheet or oven-safe platter.
Sprinkle half the cheese over the chips.
Build the nachos: Spoon a hearty layer of the shredded chicken mixture over the chips. Top with the remaining cheese.
Bake to melt: Bake for 5–8 minutes, until the cheese is melted and bubbly. Keep an eye on the edges so the chips don’t over-brown.
Add toppings and serve: Finish with your favorite toppings—sour cream, guacamole, jalapeños, pico, cilantro, and a squeeze of lime.
Serve immediately while hot and crisp.