Preheat oven 400F.
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.
Preheat a heavy-bottomed pot with remaining 2 tablespoons of EVOO. Add the onion, garlic and cumin, and cook till soft, about 3-4 minutes. Add the corn kernels along with the jalapeo.
While the veggies are cooking, puree the tomatillos in a food processor until somewhat smooth. Add the pure, stock and chicken to the pot along with the veggies.
Simmer for 10-15 minutes. Remove the soup from the heat and add in the cilantro, lime zest and juice, and serve it up garnished with a big handful of jack cheese, tortilla and avocado.