Preheat the oven to 425°F (220°C). Line a baking sheet with foil or parchment.
Pat the 2 lb salmon fillet dry and place it skin-side down on the prepared sheet. Brush the top with 2 tablespoons grapeseed or olive oil.
In a small bowl, combine 1 tsp smoked paprika, 1 tsp chili powder, 1/2 tsp garlic powder, 1/4 tsp salt, 1/4 tsp pepper, and the zest of 1 lime. Sprinkle and gently press the spice mixture over the salmon to coat evenly.
Roast the salmon for 12–15 minutes, until it is just opaque and flakes easily with a fork. Remove from oven and let rest briefly.
While the salmon cooks, prepare the salad: place 6 to 8 cups torn lettuce in a large bowl and season with a pinch of salt and pepper; toss to coat.
Add 14 oz drained black beans, chopped red bell pepper, chopped avocado, chopped mango, 1 cup halved grape tomatoes, 1/2 cup sweet corn, 1/3 cup crumbled cotija, 1/4 cup sliced green onions, and 1/4 cup chopped cilantro to the lettuce; toss gently.
Make the chili-lime dressing by whisking together 2 tablespoons lime juice, 1 1/2 tablespoons honey, 2 minced garlic cloves, 1/4 teaspoon chili powder, 1 tablespoon chopped cilantro, and a pinch of salt and pepper. While whisking, stream in 1/3 cup extra virgin olive oil until emulsified.
Flake or slice the roasted salmon into large pieces and add to the top of the salad.
Toss the salad lightly with the dressing to coat, then sprinkle crushed tortilla chips over each serving before serving.