Supersweet Corn, Seafood and Zucchini Packets

3 tablespoons olive oil
1 teaspoon minced garlic
1 teaspoon dried thyme
1 teaspoon salt
2 medium zucchini, cut in 2-inch chunks (about 3 cups)
4 ears fresh supersweet corn, cut in 2-inch pieces
1 pound shelled and deveined shrimp and/or scallops
8 thin slices lemon
    
Preheat oven to 450 degrees or heat outdoor grill.
    
In a large bowl, combine oil, garlic, thyme and salt. Add zucchini, corn and shellfish; toss. On each of four 14-by-18-inch sheets of heavy-duty foil, place a quarter of the sweet corn mixture in the center. Top with lemon slices. Draw together longer edges of foil and crimp, leaving room for steam to circulate; seal foil ends. Alternatively, divide mixture evenly among four ready-to-use single-portion foil bags.
    
(At this stage packets can be refrigerated up to 4 hours, or packed with ice in a cooler for up to 2 hours.)
    
Place packets in a single layer on a large baking sheet or on a rack in a grill. Bake or grill 15 minutes for shrimp or 20 minutes for scallops.
    
Remove packets; let stand 5 minutes before opening.
    
    Makes 4 servings.
    
    Nutrition information per serving: 276 cal., 21 g pro., 12 g fat, 24 g carbo.