I like to make my own dressings at the same time, too. I tend to like things spicier/lemonier/pepperier than jarred dressings, so it's just easier that way.
This is one of my favorites.
A heaping tablespoon of hummus.
Another of nonfat Greek yogurt...
Juice of half a lemon.
Smoked sweet paprika from my favorite spice shop...
Salt and freshly cracked black pepper.
Remember, this is YOUR dressing. Make it any way you want. Add more lemon. Less paprika. Pump up the hummus. No matter what, sneaking in the Greek yogurt will pump up the protein a bit!