Preheat oven to 350° F and spray baking sheet with nonstick cooking spray.
Chop or tear ciabatta bread into bite-sized pieces and spread evenly onto prepared baking sheet. Bake at 350° F for 10-12 minutes until toasted and golden brown.
While bread is toasting, combine tomatoes, chickpeas, artichokes, olives, feta, onions, and basil in large bowl and toss to combine.
In a small bowl, add all dressing ingredients and whisk to combine. Pour over salad and toss.
Add toasted bread and toss to soak up rest of dressing.