Turn your oven to 400 or your grill to medium high.
Slice kielbasa into thick coins, and chop vegetables into 1" pieces. Slice the corn cobs into coins or chunks of kernels. The onion into wedges. Add everything to a big bowl, pour over the oil and the spices and toss well.
Place 3/4-1 cup of sausage and veggies to the center of a piece of foil, about 10 x 12 inches.
Wrap into a tightly sealed packet, and then fold that packet inside another packet so that they don't leak.
Bake the foil packets in the oven or in the grill (covered) for 20-25 minutes. Unwrap one packet and test the zucchini to see if they're done, Serve warm.