Add half of the chickpeas to the food processor and process for 1 minute. Scrape down the bowl, then add the remaining chickpeas and process for until the hummus is thick and quite smooth, about 1 to 2 minutes more.
Add the olive oil, parsley, tarragon, chives, chopped garlic and salt to the whipped tahini and lemon juice mixture. Process for about 1 minute, pausing to scrape down the bowl as necessary.
First, you'll whip the tahini and lemon juice together to make them ultra smooth and creamy. Combine the tahini and lemon juice in the bowl of your food processor (a smaller food processor will be better suited to the job) or high-powered blender (i.e. Vitamix or Blendtec). Process for about 1½ minutes, pausing to scrape down the bowl of your processor as necessary.