Well, if you've been to Pottsville, you know what NOT to expect from Schuylkill County.
There are a few places on Rt. 443, the main street through Pine Grove that runs east from I-81. Just past the Turkey Hill gas station in town is Do's, which has great pizza. Great subs to be had just a few doors down at OIP. Turn right at the light, and look for Dominick's Pizzeria about a half-mile at the end of town, just before the high school. They also have excellent pizza and subs.
If you're in the mood for a homestyle meal, continue another 3-4 miles east, and you'll find the Red Lion Cafe, which also has decent subs and Pa. Dutch entrees. Try their broasted chicken, fresh-cut fries or french onion soup. If another few miles along this scenic country road doesn't bother you, there's a tiny place called Deb's further on, just before you enter Friedensburg, the next town. Great roast beef here!
Besides those two, another good option for breakfast is Buddy's Log Cabin on Rt. 125 just north of town. Go straight through the light at 443 for about a mile.
Finally, there's a serviceable restaurant west on 443 from I-81, at the Twin Grove campground.
Ah, the land of my in-laws. I am very familiar with the area.
In Tremont proper, right on the main drag is a pizza place called Mancino's which is actually really, really great. Amazing pizza, even to this ex-NY'er. They also bake their own rolls - the sandwiches are great, too.
Another Italian place, Palermo's, in Minersville, is probably the busiest restaurant in the area. Enormous portions and inexpensive. Again, great pizza (especially the Margherita) and rolls made from scratch. All of the pasta dishes I've gotten there have been very, very good. When my husband and I are visiting his family, this is where we go.
Somewhere around Pine Grove, I don't remember where exactly, is a place called Buddy's Log Cabin. Great breakfasts - they make real homefries.
That's pretty much it, but these 3 are really good. Highly recommend Palermo's for dinner.