Jesus, I get more than 5 servings of vegetables in my lunch salad. I weighed it on my food scale last night. With the Tupperware container, it's 1.2 kg. There was 300g of romaine alone, not to mention a whole cucumber, a large green bell pepper, 3 jalapenos, 4 large 4+" diameter mushrooms and half a pound of chicken.
That being said, does it really matter all that much? Vegetables are overrated IMO. Sometimes, just to clear out my digestive tract, I'll eat a meal of a pound of pork and 6 eggs. That's it. It's important to eat your greens, but don't go after a set number. Include greens with most meals, then eat a huge meal with a pound of veggies, then eat a meal with no veggies whatsoever. Change it up. Your body stays cleanest when you constantly vary what you eat since it doesn't allow specific toxins to accumulate.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.