I guess I'll be the freak here and support my personal favorite...La Brea Cafe and Bistro. Both the sitdown part and the quick serve, imho, have a decent meal. But, I'm one of those people who loves to sit and linger and discuss. Being that close to the gates, too, doesn't hurt.
Most people run in there thinking they are getting a deal away from the gates of the two parks. They aren't. But the view is great and I love bistro food.
House of Blues is good and has FANTASTIC artwork on the interior. What's especially good? Go on a Sunday for brunch. You can sample their entire southern menu...and if you don't like it, there's stuff you know you'll like somewhere since it is a buffet. It's called a Gospel Brunch, and, quite frankly, I've gone twice and the music is AWESOME. Some people make a day of it, dressing up, but forget it, you are there for the food and the music---enjoy yourself and wear flip flops.
Those are my recommendations.