Start by rinsing your quinoa under cold water.
In a saucepan, add quinoa and 2 cups (480 ml) of water.
Bring it to a boil, then lower the heat and simmer for 15 minutes or until the quinoa is cooked.
While the quinoa is simmering, preheat your oven to 425°F (220°C).
In a large bowl, mix chopped red bell pepper, yellow bell pepper, zucchini, and red onion with olive oil, salt, and pepper.
Spread the veggies on a baking sheet in a single layer.
Roast the veggies in the oven for 20 minutes, giving them a stir halfway through.
Once roasted, take them out and let them cool.
In a large bowl, mix together the cooled quinoa, roasted veggies, cherry tomatoes, cucumber, fresh basil, and parsley.
Drizzle with lemon juice and toss everything together.
Adjust seasoning with salt and pepper as needed.