Preheat oven to 350 degrees F.
Place the salmon filets on a foil-lined baking sheet, rub evenly with the coriander and chili powder, then juice one of the limes over the filets and season with salt and pepper.
- Roast the salmon for 10-15 minutes, depending on thickness, until the fish flakes easily with a fork.
For the salsa: combine the juice of remaining lime, watermelon, cucumber, red onion, mint, and cilantro in a medium bowl. Stir to combine and season to taste with salt and pepper.
To serve, top the roasted salmon generously with watermelon salsa and serve atop a bed of your favorite carb (quinoa, brown rice, potatoes, etc.)!