Prepare the Salsa Verde Honey Lime Chicken in a slow cooker according to the original recipe directions and timing, and add the drained 15-oz can of rinsed black beans to the cooker while the chicken cooks.
When the chicken and beans finish cooking, remove the chicken, shred it, and drain any excess liquid; set the shredded chicken aside.
Make the mango guacamole: in a medium bowl, mash the avocado to your desired consistency with a fork or masher.
Stir the 2 tablespoons sour cream, 1 tablespoon mayonnaise, 1 tablespoon lime juice, 1/4 teaspoon garlic powder and 1/4 teaspoon ground cumin into the mashed avocado until combined.
Fold in the chopped mango, season the guacamole with salt and pepper to taste, and refrigerate until ready to assemble.
Preheat the oven to 375°F (190°C). Spray the wells of two 12-count muffin tins with nonstick spray.
Press one wonton wrapper into each muffin well to form cups and bake for 5 minutes to set and begin crisping.
Scoop about 2 tablespoons of the shredded chicken-and-bean mixture into each baked wonton cup, then top each with about 1 teaspoon shredded Monterey Jack cheese.
Bake the filled cups for 5–7 minutes more, until the wrappers are crispy and the cheese is melted; optionally broil briefly to brown the cheese.
Top each taco cup with shredded lettuce, mango guacamole, tomatoes, cilantro, salsa and a squeeze of fresh lime; serve immediately.