Cook pasta according to package directions, omitting salt and fat. Drain.
Combine tomato and remaining ingredients in a large bowl. Add pasta, and toss well to combine. Serve immediately.
Tip: Quickly peel tomatoes by plunging them into the boiling pasta water (before adding the pasta) for 20 seconds; remove with a slotted spoon, and quickly rinse under cold water. The skins will slip right off.