Lemon Seafood with Pasta

1 pound uncooked medium shrimp, tailed and deveined
1 pound bay scallops
1 zucchini, cut into slices
1 yellow summer squash, sliced
1 green bell pepper, cut into strips
1 cup chicken broth
1/4 cup lemon juice
2 Tbsp cornstarch
1 tsp dill
1/4 tsp salt
2 cups hot cooked rotini pasta
Grated parmesan cheese

Mix shrimp, scallops, zucchini, squash, and bell pepper in microwaveable dish. Cover tightly and microwave 8-10 minutes, stirring every 3 minutes, until shrimp are pink and firm. Drain; let stand, covered, for 5 minutes. Mix broth, lemon juice, cornstarch, dill, and sat in microwaveable bowl until smooth. Microwave, uncovered, 3-4 minutes, stirring every minute, until mixture thickens and boils. Stir into seafood mixture. Serve seafood mixture over pasta. Top with parmesan cheese.