Heat your grill to medium-high heat, about 400°F if you're using a thermometer. I brush my grates clean and oil them lightly because sticking ruins the whole presentation, and nobody wants to scrape zucchini off metal at a cookout.
While the grill preheats, pat your zucchini slices dry with paper towels—moisture is the enemy of char. Wet vegetables steam instead of sear, which defeats the entire purpose of choosing grilled zucchini crowd summer over a sad raw platter.
Toss the dried slices with olive oil, salt, and pepper in a wide bowl, making sure each piece gets coated evenly. Don't oversaturate because excess oil causes flare-ups that burn the exterior before the inside cooks through—I learned this the hard way years ago.
Place zucchini slices directly on hot grates in a single layer, leaving small gaps between each one. Grill for 3-4 minutes on the first side until dark grill marks appear, which means the natural sugars are caramelizing into actual flavor.
Flip each slice carefully using tongs, and grill the second side for another 2-3 minutes until you see similar char marks. This is when the vegetable develops that smoky exterior everyone remembers at potlucks.
Transfer grilled slices to a clean platter or cutting board, then immediately drizzle with minced garlic, fresh lemon juice, and that teaspoon of honey. The heat from the zucchini slightly softens the garlic and releases its fragrance—this matters because raw garlic would overpower everything.
Top each slice with chopped parsley, grated Parmesan, toasted pine nuts, and a tiny pinch of smoked paprika. The finishing touches take 60 seconds but transform this from a side into the dish people photograph and share.