Boston Oyster House is good! But avoid all Tom English owned restuarants.
Legals is inflated (just another Red Lobster now), and the menu has been downgraded tremendously. In the good 'ol days, I used to order the baked stuffed shrimp and they gave 6 pieces and an excellent stuffing! Now they changed the stuffing, 4 shrimp and a higher price. They are trying to add Asian dishes, but it isn't like a P.F. Changs. Our family has literally stopped going to Legals, except buying their fish at their market to cook at home ourselves. We save $45.00 per trip by not eating there.
But I will say that the Terminal B Legal's used to be the place to go, INSIDE the US Airways gate area. Now TSA says no and that gets everyone tee'd, PAX and Legals. What a horrible airport, Logan.