Preheat oven to 350
Preheat pan with olive oil to medium-high heat. Sear chicken and cook through. Set aside. Once cooled, shred with a fork.
In the same pan, add a little more olive oil and chopped peppers, onions, tomatillos, and garlic. Cook over medium heat until veggies are soft and releasing their liquid.
Add taco seasoning, corn, black beans, and cooked rice. Cook for an additional 2-5 minutes, stirring occasionally.
Put veggies in a bowl and mix with shredded chicken.
In the same pan, add a layer of cheddar cheese (about 1/4 cup.) Place a tortilla on the cheese. (add additional pieces of tortillas along the side of the pan to create a "crust", if desired.)
Add 1/3 of the veggie/chicken/bean filling and top with 1/4 cup of cheese and another tortilla. Repeat this process until all of the filling is used.
Top last layer with 1/4 cup of cheese and one final tortilla. Transfer pan to oven and bake for 20-30 minutes until lasagna is bubbly and starting to brown.
Remove pan from oven. (I like to keep a hot pad on the handle while it's cooling, so I don't forget it's hot!) Let the lasagna cool for about 10 minutes. Turn out onto a large platter, plate, or cutting board. Garnish and serve with your favorite Mexican toppings - salsa, fresh tomatoes, avocado, cilantro, green onions, chives, romaine lettuce, sour cream, queso, guacamole, lime, etc. Refrigerates and reheats well for leftovers.