The fajitas at Sol Azteca sizzle so loudly you'd swear the kitchen is on fire. You can hear them coming even before the waitress steps into the dining room trailed by a long stream of savory smoke. (On Friday nights, when dozens of people order the dish, the dining room literally feels like a meat-steam sauna.) When she sets down the scorching hot iron plate, you're staring at a mountain of charbroiled beef, chicken and shrimp. She might as well bring the doggy bag along with the meal; unless you've starved yourself for a week, you'll never finish the whole thing.