Combine all of your prepared dressing ingredients in a mixing bowl. Whisk everything together and taste for seasoning. Be careful about adding too much salt, because you will get a lot of salty flavour from the feta. The dressing can definitely sit overnight to bring out the garlicky goodness!
Cook your pasta in salted water. Make sure it is al dente, because the dressing will soften the pasta once it is absorbed. Once your pasta is cooked, leave in a large bowl to cool. If you are short on time, rinse under cold water.
Add all of your prepared vegetables and feta to the bowl of pasta. Pour on your dressing and toss. I like to let the salad sit for an hour before serving, to giving the dressing a chance to be absorbed, but it is not necessary.