Cut each round into six wedges; Split each wedge in half and brush inside surface lightly with oil. Place wedges on baking sheet.
Bake for 5 to 10 minutes or until crisp.
Combine chili with beans, chiles, flour and hot pepper sauce in medium bowl. Combine sour cream and milk in small bowl. Top baked pita chips with chili mixture, cheese, tomato, olives, green onion and sour cream mixture.
Bake for 12 to 15 minutes or until cheese is melted.