In a large bowl, mix the chicken, black beans, corn, and 1 cup of enchilada sauce.
Spread ½ cup of enchilada sauce on the bottom of a large baking dish.
On a clean surface, overlap 2-3 zucchini slices to form a wide base. Add 2-3 tablespoons of the filling, then roll up and place in the baking dish. Repeat until all the filling and zucchini are used.
Drizzle the remaining ½ cup enchilada sauce over the rolls and sprinkle with cheese.
Bake for 20-25 minutes until the cheese is melted and bubbling. Garnish with cilantro and serve.