In a medium saucepan, heat olive oil over medium heat. Add the chopped onion and sauté until translucent, about 3-4 minutes.
Add the minced garlic and diced bell peppers to the pan, and sauté for another 2-3 minutes until the peppers begin to soften.
Stir in the diced carrot and peas, cooking for an additional 2 minutes.
Add the rinsed quinoa to the pan and stir well to combine with the vegetables.
Pour in the vegetable broth, and bring the mixture to a boil. Once boiling, reduce the heat to low, cover, and let simmer for about 15 minutes, or until the quinoa is cooked and has absorbed all the liquid.
Once the quinoa is cooked, remove the pan from heat and let it sit covered for 5 minutes.
Fluff the quinoa with a fork, then stir in the lemon zest, lemon juice, chopped parsley, and dill. Season with salt and pepper to taste.
Serve warm as a side dish or as a light main meal.