Cut the corn tortillas into ninths, place in a food processor and chop until fine. Add flour, chili powder, cumin, salt and pepper. Blend until the tortillas become the consisitency of cornmeal. Place the canola oil in a stockpot on medium-high heat. Add onions, peppers and garlic. Saute until onions are clear. Add butter and let melt. Add tortilla-flour mixture to the pan and mix to form a roux, stirring with a wire whip. Do not let it burn. While stirring, slowly add the chicken stock. Make sure to scrape the sides and bottom. Add the half-and-half. Bring to a slow simmer and cook for 7 to 10 minutes. Do not let soup come to a hard boil. Turn off heat and let cool. Add the roasted chopped chicken meat to the stockpot before serving. Top each serving with shredded Monterrey Jack cheese, diced poblano pepper and crisply fried tortilla strips. Per serving 181 calories, 11 grams fat, 26 milligrams cholesterol, 591 milligrams sodium. Copy of recipe printed in the Houston Chronicle. Recipe from Cavanagh's restaurant.