directions
1. if using bamboo skewers, soak 6 skewers in water for at least 30 minutes.
2. prepare a hot grill fire, preheat a gas grill on medium-high heat for 10 minutes, preheat an indoor grill, or heat a grill pan on medium heat until hot.
3. thread tomatoes onto 2 skewers. if using a charcoal or gas grill, thread onion wedges onto skewers, using 2 parallel skewers to hold wedges in place. brush tomatoes, onion, eggplant, and zucchini with oil and sprinkle with salt and pepper.
4. grill vegetables, turning frequently, until charred and softened, moving them to a cooler part of the grill if needed to cook them through without burning. transfer to a medium bowl, taking tomatoes and onion wedges off skewers, and toss together.
5. in a serving bowl toss little gems with dressing. top with vegetables, then sprinkle with parsley.