03For the zucchini skewers: Thread 3 or 4 zucchini rounds onto two parallel skewers, so that the cut sides will lay flat on the grill. Brush the zucchini with canola oil and season with salt and pepper. Grill, uncovered, until charred and tender, 2 to 3 minutes per side. Transfer to a platter and drizzle with some olive oil. Serve with the jalapeno yogurt sauce.