I second El Rey. They serve up a hearty Dominican Breakfast - will keep you going all day long. Just a block or so up on the other side of Hillside is El Comal, a Salvadoran Pupuseria. I liked this place better when it was a small dark storefront with a limited menu and some delicious pupusas. Since they expanded, their menu is hit and miss, but the pupusas - last time I checked - were still making it. Some other places on Hillside to check out are an outpost of Sybils (not far from the 169th street F stop), a Guyanese steam table joint that serves up rotis and stews, and the latest outpost of Pio Pio (a few blocks away from the Parsons F stop), which I first noticed some weeks back, for some rotisserie chicken. Other places not far from the 169th stop on Hillside are Genesis I, for Jamaican, and another place , I believe the name is Tandoori (?) for north Indian. Based on one visit apiece to Genesis and Tandoori, I would rate them as being okay, not great, but some dishes might shine above others.
If you're traveling south on Guy R. Brewer, you'll notice quite a few Jamaican steam table joints lining both sides of the street. They serve staples such as Ackee and Codfish, Red Snapper, Jerk Chicken, peas and rice, etc. One such place is Yogi's, which, based on one visit, I liked. Here's the link: http://www.chowhound.com/topics/39095...
Enjoy your travels.
I can recommend Casita, a Salvadoran restaurant on Jamaica Avenue between 149th and 150th. The pupusa platter there is quite nice. There are a number of Salvadoran restaurants on that block, by the way, which I haven't had the chance to check out but look like they're worth exploring.
I also like Seema's, a very tasty Trinidadian roti place. I don't know about delivery, but it's definitely take-out-oriented. On 165th Street just north of Jamaica Avenue.