Preheat your oven to 425 degrees.

Place tortillas on a rimmed baking sheet. Brush the tortillas with the canola oil. Flip them and brush the other sides. Bake for 8-10 minutes, flipping the tortillas half way through and rotating the pan.

Meanwhile, in a medium to large sauce pan, add the chicken, salsa, taco seasoning, corn, and black beans. Cook for about 5 minutes, stirring occasionally, until it is cooked through.

When tortillas are cooked, top each with 1/2 a cup of the chicken mixture. Top each with 1/4 a cup of cheese each, and place back in the oven for 5 minutes or until the cheese is melted.

Top with cilantro, sour cream, and diced tomatoes if desired. Serves 4-8.