Crispy Salmon with Fennel Slaw

Name: Crispy Salmon with Fennel Slaw
Ingredients: 1 large fennel bulb—halved lengthwise, cored and very thinly sliced crosswise; 1/4 cup very thinly sliced red onion; 3 tablespoons fresh lemon juice; 2 tablespoons finely chopped dill; 2 1/2 tablespoons extra-virgin olive oil; Kosher salt; Four 6-ounce salmon fillets with skin