Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper.
In a large bowl, toss the zucchini, red bell pepper, yellow bell pepper, and red onion with 2 tablespoons of olive oil, salt, and pepper until the vegetables are well coated.
Spread the vegetables in a single layer on the prepared baking sheet. Roast for 20 minutes, or until tender and slightly caramelized, stirring halfway through.
While the vegetables are roasting, bring 2 cups of water to a boil in a medium saucepan. Add the Israeli couscous and cook according to the package instructions, usually about 10-12 minutes, until al dente. Drain any excess water and let it cool.
To make the lemon dressing, whisk together the extra virgin olive oil, lemon juice, lemon zest, minced garlic, honey, and salt and pepper in a small bowl.
In a large bowl, combine the roasted vegetables, cooked couscous, chopped parsley, and mint.
Pour the lemon dressing over the salad and toss until everything is well combined and evenly coated.
Taste and adjust the seasoning if necessary. Serve at room temperature or chilled.