Ingredients:
1 medium summer squash, sliced on the diagonal into 1-inch slices
1 medium zucchini, sliced on the diagonal into 1-inch slices
2 tablespoons extra-virgin olive oil, plus more for drizzling
Kosher salt and freshly ground black pepper
4 tablespoons unsalted butter
1/4 teaspoon crushed red pepper flakes
2 cloves garlic, grated
Zest of 1 lemon, plus lemon wedges, for serving
1/2 loaf French bread, split horizontally, then halved crosswise
1/4 cup grated Parmesan
1 1/2 pounds peeled and deveined shrimp, tails removed
1/4 cup fresh parsley leaves, chopped