Preheat your oven to 400°F (200°C). Gather your ingredients and prepping equipment.

Wash and slice your zucchini, red onion, and bell peppers into uniform pieces, roughly 1-inch in size. Halve the cherry tomatoes and set aside.

In a large mixing bowl, toss the chopped vegetables with olive oil, oregano, and minced garlic until well-coated.

Spread the seasoned veggies mixture evenly on a baking sheet lined with parchment paper.

Place the tray in the oven and roast for approximately 30 minutes, stirring halfway.

Remove from the oven and sprinkle crumbled feta cheese over the hot vegetables. Allow to cool slightly before serving.