Sheet Pan Herb Garlic Butter Surf and Turf

-lb uncooked deveined peeled extra-large shrimp (16 to 20 per lb), with tails left on

-lb uncooked scallops

-beef T-bone steaks

-lb of asparagus spears, trimmed

-teaspoons garlic salt

-tablespoons old bay seasoning

pepper

fresh rosemary and thyme to garnish

-lemon sliced for serving