In microwave-safe bowl combine chicken and 1/2 cup salsa. Microcook, covered, on 100 percent power (high) 5 to 7 minutes, stirring once, until no pink remains. Remove with slotted spoon. Cover and keep warm.
In medium microwave-safe bowl combine potatoes and 1 tablespoon water. Cover with plastic wrap and microcook on 100 per cent power (high) 3 to 4 minutes or until tender, tossing once. Carefully open corner of plastic to let steam escape. Cool briefly. Cut in chunks; lightly sprinkle with salt. Cut uncooked corn from cobs.
On each tortilla place chicken, corn, tomatoes, parsley, sweet pepper, potatoes, zucchini, and remaining salsa. Serve immediately. Makes 12 tacos.