STEP 1For the dressing, combine all ingredients in a jar with a tight-fitting lid. Shake vigorously, or until dressing is emulsified. Add a splash of water to thin if dressing is too thick. Season with salt and pepper, if needed. Set aside.
STEP 2In a medium bowl add tomatoes, avocado, goat cheese, pecans, and chives. Gently toss with the dressing. Season well with salt and pepper.
STEP 3Best when placed in fridge to allow flavors to merge for 20 minutes before serving.