Preheat & Prep: Set the oven to 425°F and line a baking tray with parchment paper.
Marinate the Zucchini: In a bowl, combine the zucchini slices with lemon juice, a drizzle of olive oil, and a pinch of salt. Stir well to coat and set aside to marinate.
Cook the Kamut: Bring a pot of water to a boil and cook the kamut following package instructions. Once done, drain and allow to cool slightly.
Boil Potatoes & Beans: In a separate saucepan, bring salted water to a boil. Add the potatoes and cook for about 15 minutes until fork-tender. During the last few minutes, add the broad beans. Once both are cooked, drain and separate the beans from the potatoes.
Smash & Roast Potatoes: Arrange the cooked potatoes on the prepared baking tray. Use the bottom of a cup or glass to lightly smash them. Drizzle with olive oil, season with salt and black pepper, then roast for 30 minutes, flipping halfway through.
Make the Dressing: While the potatoes roast, mix all the dressing ingredients in a jar and shake well until combined.
Assemble the Salad: In a large bowl, combine the cooked kamut, marinated zucchini, roasted smashed potatoes, broad beans, most of the pistachios, and chopped mint. Drizzle with the lemon dressing and toss until well coated.
Garnish & Serve: Sprinkle the remaining pistachios and lemon zest on top before serving.