Northgate is my neighborhood.
I’m not sure why you’re dropping by this mall in particular; there’s lots of better places for visitors to walk around and see the city and shop. The Fremont neighborhood is a good bet, though getting there is kind of messy with the bridge partially closed for construction. Ballard is kind of fun too.
But if that’s where you’re going, then okay. For lunch options, there’s not a lot that’s distinctive in the immediate vicinity. You have a bunch of chains (Azteca, Tony Romas) and middlebrow joints (Seattle Crab Company, which is owned by Skipper’s); the better restaurants are either in the adjoining neighborhoods or aren’t open for lunch on a weekday. There is one good choice, though, if you’re in the mood for something unusual: try the Indo Cafe. Seattle is known for its Pacific Rim immigrants, and these guys have pretty good Indonesian food.
If you’re willing to leave the neighborhood, I’d go west on Northgate Way over to Aurora, and try one of the dozens of Asian joints you’ll find there. The Korean BBQ and Vietnamese Pho type places are probably your best bets.
Re the pink flowers, I agree that azaleas or rhododendrons are your best bet. If the leaves are smallish, it’s the first; if they’re the size of your hand, it’s the second.
ETA: I wouldn’t recommend the Maple Leaf Grill. They used to be good but have slipped a bit. Also, I don’t think they’re open for weekday lunch. The Jones, across the street and a block south, is a better neighborhood restaurant.
Or, actually, now that I think about it, Snappy Dragon, on the same block as the Maple Leaf Grill, is one of the best Chinese restaurants in the city. It’s Mandarin style, so not as spicy as Szechuan, and their handmade noodles are phenomenal. And I’m pretty sure they’re open for weekday lunch. That’d be a good choice.