1. Combine garlic, chiles, adobo sauce, lime juice and mayonnaise in the bowl of a food processor and process until smooth. With blades in motion, slowly pour in olive oil. Pulse in Parmesan, salt and pepper. (Makes about 3/4 cup dressing. Can be made up to 3 days in advance. Cover and chill until ready to use.)
2. Just before serving, toss lettuce with dressing, cilantro and crushed tortilla chips. Garnish salad with additional chips if desired.