Preheat oven 400°F.
In a large pot, bring the chicken stock and water to a bubble with the reserved corn cobs and let simmer for about 10 minutes.
Place the corn tortilla strips onto a baking sheet and spray them with some cooking spray. Transfer to the oven and bake until crispy, 10 minutes.
Preheat a skillet over medium-high heat with some EVOO about 2 turns around the pan. Add the chicken, browning on all sides, then place into the oven for about 7-8 minutes, until juices run clear and no pink remains in the center. Once the chicken is done cooking, remove from oven and let rest before cutting into strips.