Preheat a grill to medium-high heat, about 400–450°F (204–232°C).
Brush the zucchini, eggplant, onion, and bell peppers with 2 tablespoons olive oil.
Sprinkle the vegetables with 1½ teaspoons kosher salt.
Grill the onion slices for about 3 minutes per side until lightly charred, then move them to indirect heat and cook until tender.
Grill the zucchini, eggplant, and bell peppers for about 3 minutes per side until tender with grill marks.
Remove the vegetables from the grill and allow them to cool for about 10 minutes.
Bring a large pot of salted water to a boil.
Cook the pasta according to the package directions until al dente. Drain well.
In a large bowl, whisk together the apple cider vinegar, Dijon mustard, honey, grated garlic, remaining olive oil, and remaining salt until smooth.
Chop the grilled vegetables into bite-sized pieces.
Add the cooked pasta, grilled vegetables, and fresh basil to the bowl with the dressing.
Toss everything together until evenly coated.
Taste and adjust seasoning if needed.
Garnish the Bedford Grilled Vegetable Pasta Salad with extra fresh basil before serving