Follow these steps to create your BBQ Veggie Foil Packets with Zucchini and Peppers:

1. Prepare the Grill: Preheat your grill to medium heat, about 350°F (175°C).
2. Cut the Vegetables: Slice the zucchinis, chop the bell peppers, and slice the red onion into even pieces.
3. Mix the Ingredients: In a large bowl, combine the sliced vegetables. Drizzle with olive oil and sprinkle with garlic powder, paprika, salt, and pepper. Toss until everything is well coated.
4. Create Foil Packets: Cut large sheets of aluminum foil. Place an equal portion of the vegetable mixture in the center of each sheet.
5. Seal the Packets: Fold the edges of the foil over the vegetables to create a sealed packet. Ensure there’s some space within the packet for steam to build up.
6. Grill the Packets: Place the foil packets on the preheated grill. Cook for 15-20 minutes, turning halfway through for even cooking.
7. Check for Doneness: The vegetables should be tender when you carefully unfold one of the packets. If not, reseal and continue cooking for a few more minutes.
8. Serve: Carefully open the packets while being cautious of the steam. Serve the veggies hot, in the foil or on a plate.

With these simple steps, you’ll have delicious BBQ Veggie Foil Packets ready to enjoy!