Preheat oven to 375°.
In a large bowl, toss diced zucchini and yellow squash with olive oil, Herbes de Provence, salt, black pepper, and garlic untiled evenly coated.
Place in a parchment- or foil-lined baking dish and roast for 15 minutes.
Toss veggies and roast for 15 more minutes or once the zucchini and yellow squash start to brown at the edges.
Serve warm and enjoy!