Preheat your grill to medium-high heat, around 400°F (200°C).

Wash and slice the zucchini, bell peppers, and red onion into even pieces, about 1-inch wide. Trim the ends of the asparagus and halve the cherry tomatoes.

In a food processor, combine fresh parsley, garlic cloves, red wine vinegar, crushed red pepper flakes, and olive oil. Pulse until well-blended but still textured.

Toss the chopped vegetables with chimichurri sauce in a large bowl until evenly coated. Allow marinating for 15-20 minutes.

Grill the marinated vegetables for 5-7 minutes per side until tender and charred. Watch for those grill marks.

Remove from grill and drizzle remaining chimichurri sauce over warm veggies.

Serve immediately, either as a side dish or a light main course, with extra chimichurri on hand.