2 lb flank steak, trimmed
1/2 cup chopped yellow onion
1/2 cup each chopped red and green bell pepper
2 cloves garlic, peeled
1 small jalapeño chile pepper, 
seeded and chopped
1/3 cup unsalted jarred or boxed 
diced tomatoes
1 tbsp chile powder
2 tsp ground cumin
1 tsp dried oregano
1/2 tsp sea salt
16 6-inch corn or whole-grain tortillas

SALSA
1 small jalapeño chile pepper, seeded and finely chopped
2 cups peeled, cored and diced pineapple
1/2 cup chopped red onion
1/2 cup seeded and chopped red bell pepper
1/2 cup chopped fresh cilantro
2 tbsp fresh lime juice
1/2 tsp sea salt