Finely chop all the herbs and add to the butter. Mix thoroughly. Alternatively, add all ingredients to a small food processor and process until herbs are blended into the butter.  Set aside.

Prepare all your vegetables to make for easy assembly of skewers. Cut your zucchini into slices that are 1/2" thick. Cut onion in half, then into squares that are approximately 1-2" squares. Carefully slice corn on the cob into thirds with a very sharp knife and bell peppers into 1-2" squares.

Using metal skewers, assemble skewers by layering the vegetables on each.

Place the skewers on a hot barbecue and rotate throughout cooking process to ensure vegetables are evenly cooked throughout. Serve with the herbed butter (you can put it on yourself or let guests butter their own hot skewers).