In a large skillet, heat 1 tablespoon of olive oil over medium heat. Add 1 pound of ground chicken (or shredded rotisserie chicken) and cook until it's no longer pink, about 5-7 minutes.
Sprinkle 1 teaspoon of kosher salt, 2 teaspoons of chili powder, 1 teaspoon of paprika, 1 teaspoon of ground black pepper, 1 teaspoon of cumin, and 1 teaspoon of coriander over the chicken. Stir well to coat the meat evenly in the spices.
Once the chicken is cooked and seasoned, stir in 1 cup each of drained canned black beans, pinto beans, and white beans. Cook for an additional 2-3 minutes until heated through.
Preheat your oven to 350°F (175°C). On a large baking sheet, spread 6 cups of tortilla chips in an even layer. Top the chips with the chicken and bean mixture. Generously sprinkle 1 cup of shredded Mexican cheese blend over the top.
Place the baking sheet in the preheated oven and bake for about 10-15 minutes, or until the cheese is melted and bubbly.
Once out of the oven, scatter 2 tablespoons of pickled jalapeños, 1 cup of shredded lettuce, ½ cup of black olives, and 1 cup of sliced cherry tomatoes over the nachos. Top with slices of avocado and 2 tablespoons of sliced red onion.
Serve the nachos hot, garnished with dollops of sour cream, fresh cilantro, and lime slices on the side for squeezing over the top.