1/2 cup feta cheese, crumbled or cut into small pieces (*see note)
½ cup of pitted black kalamata olives
To make the dressing, whisk the olive oil, red wine vinegar, balsamic vinegar, feta brine, dill, oregano, sea salt, garlic, and lemon juice in a medium-sized bowl.
Cut all the veggies so that they are roughly the same size. Add the bell peppers, cucumber, cherry tomatoes, red onion, feta cheese, and olives to a large bowl. Pour the dressing over the top and toss to coat.