Mix 1 tsp salt, 1/2 tsp chili powder, 1 tsp ground cumin, 1 tsp paprika, 1 tsp onion powder and black pepper together, rub salmon fillets with olive oil and this seasoning mix. Refrigerate for at least 30 minutes. Pre-heat the grill and grill salmon to desired doneness. Combine1 avocado sliced, 1/2 red onion, 1-2 tbsp cilantro, lime juice from 2 limes, and salt in a bowl and mix well, chill until ready to use. Top with avocado salsa and enjoy!