This is the age-old question: what exactly is a serving size? One spinach leaf in your morning smoothie isn’t going to cut it, but a handful of basil or parsley chucked into your pasta sauce absolutely counts as one (or two!) of your plants.
It’s all about feeding your gut bacteria different types of nutrients. Even though you might not be having large portions of, say, rice, leafy herbs, sweet potato and green beans, the nutrients of all those veggies and herbs combined will feed different bacteria in your gut and help diversify the microbiota.