Salmon Tostadas

Name: Salmon Tostadas
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: American, Mexican, Latin American
Ingredients: 1 lb wild salmon (or farmed); 2 tsp brown sugar (optional); 1 tsp kosher salt; 1/2 tsp ancho chili powder; 1/2 tsp chili powder; 1/2 tsp garlic powder; 1/2 tsp onion powder; 1/4 tsp oregano; 1/4 tsp black pepper; 2 tsp olive oil; 1 cup avocado (mashed with salt and pepper, or guacamole, more if needed); 8 corn tortillas; 2 cups pineapple; 1 jalapeno, diced (more to taste); 1/4 cup red onion, diced; 1/4 cup cilantro, diced; 1 lime, juice (more if needed); Salt and pepper