Cut cherry tomatoes in half and place them into a large bowl, sprinkle with the pinch of sugar, add the salt and pepper, add the diced peppers and sliced red onion, and toss really well.
Place the vinaigrette ingredients in the blender and pulse for about 10 seconds.
Pour the vinaigrette over the tomato mix.
Add the diced feta cheese and toss to ensure that all the vegetables are evenly covered with the vinaigrette.
Serve immediately. Use spoons instead of forks. Yes, serve with spoons so you can enjoy all the delicious juices.
If serving later, wait to dress the salad, cover the bowl and let sit at room temperature for up to 6 hours and toss with the vinaigrette soon before serving.
Notes
Tomatoes do not store well in the refrigerator as their texture and taste quickly deteriorate. Make just enough to eat and make more if needed, it's really quick.