In a small bowl, mix together the mayonnaise, tahini, agave, apple cider vinegar, garlic powder, onion powder, black pepper, sea salt, and dillweed.
Add the creamy mixture to the bowl with the broccoli, chicken, bacon, sunflower seeds, raisins, and onion. Mix until all ingredients are coated.
Give it a taste test to make sure it doesn't need any more salt, sweetness, or garlic!
Place in the refrigerator for thirty minutes before serving.