I used the following veggies:
1 Cucumber (didn't bother to remove the skin)
¼ Red Onion
3 Roma Tomatoes or 2 medium Tomatoes
¼ Red Bell Pepper
¼ Green Bell Pepper
You can use more or less of the bell pepper, I just used the trimmings from a bell pepper I used for Kabobs since I had some left over. If you don't like the seeds, remove those from the cucumber before cubing, then just cube everything.
For the cucumbers, I took a paper towel and draped that over a bowl, then put the cubed cucumbers on the paper towel, and sprinkled about a 1/4 teaspoon of salt over it. Then I left it in the fridge for about 30 minutes (according to this, doing this helps to remove excess water). Once the cucumbers are drained off, then add all the veggies to a bowl.
For the dressing, I modified this recipe for a smaller salad (enough for 3) and added some other seasonings:
3 Tablespoons Olive Oil
2 Tablespoons Red Wine Vinegar
½ Tablespoon dried oregano
1½ teaspoons of Badia Andrew Zimmern Mediterranean Magic All-Purpose Seasoning
Salt and Pepper to taste (I use at least ¼ teaspoon of salt and several grinds of pepper)
I mixed the dressing together in a separate bowl and let that sit in the fridge until everything was ready to serve (which helps the seasonings mix). Also easy to taste the dressing and see if it needs something. Then just before serving I mixed the dressing in and put some Feta Cheese on top.