In a small bowl, combine the dressing ingredients and whisk together until well combined. Set aside.
Prepare the vegetables. Slice the cucumber lengthwise in half and then into quarters, and chop into 1/2 inch pieces. Cut the tomatoes into chunks. Core bell pepper and cut into chunks. Slice onion into thin strips.
Add chopped cucumber, tomatoes, bell pepper, onion and olives to a bowl.
Drizzle salad with dressing mixture and toss to combine. Crumble with goat cheese and toss gently again to combine.
Set aside for 30 minutes to allow the flavours to blend.