It really depends on where you are. If you're on Palm Parkway, then there's Dominoes (I hope it's still there,) Hooters (although I've not been,) and a couple other places.
On the crossroads of 535 / Palm Parkway / Vineland Road, there's the Orlando Ale House, Black Angus, Chili's, Olive Garden, Giordano's... loads actually. Won't go to Sizzler there again after getting held up by a timeshare salesman, what part of I already own don't they get?
On 535 just after coming off I4, there is a Maccy D's (been once,) and Crossroads mentioned above, but never eaten in that area.
For the last few trips we have stayed in the same area, just trying out the different timeshares, so we know the food quite well round there.
Best bet I would say is to Google Earth/Maps the area you're staying in, most of the restaurants / take aways will be marked on there.