PREPARATION:

1. Pour oil into wok to depth of 1 inch. Place over medium-high heat until oil registers 360°F on deep-frying thermometer. Slide 1 tortilla into oil. Using 2 slotted spoons, gently hold center of tortilla down so oil flows over edges. When tortilla is crisp and golden on bottom, carefully tilt wok, holding tortilla in place with spoon, to cover edge of tortilla with oil; cook until lightly browned. Rotate tortilla as needed so entire edge is lightly browned. Remove from oil and drain on paper towels, curled side down. Repeat with second tortilla. Tortillas can be made up to 8 hours in advance. Cover loosely and let stand at room temperature.
2. Preheat oven to 350°F. Place shells, curled side up, on baking sheet. Sprinkle each with half of the Cheddar cheese; top each with half of the picante sauce. Sprinkle with Parmesan cheese. Bake, uncovered, 8 to 10 minutes or until cheeses melt. To serve, break into bite-size pieces.