Sauté rice in margarine in a large skillet until golden, stirring frequently. Slowly add water, seasoning packet from rice, and tomatoes; bring to a boil. Cover; reduce heat to low and simmer 10 minutes. Stir in shrimp, zucchini, corn and olives; cover and simmer 5 to 10 minutes or until shrimp are pink and rice is tender. Transfer to serving bowl. Sprinkle with chips, cheese and onion. Serve with picante sauce.