Salmon With Creamy Cucumber-Fennel Salad Recipe

Ingredients

• 4 6 ounce pieces skinless salmon fillet
• 1 tablespoon olive oil
• 1/4 teaspoon cayenne pepper
• kosher salt
• black pepper
• 1 lemon, thinly sliced
• 1/2 cup plain low-fat Greek yogurt
• 1 tablespoon cider vinegar
• 1 fennel bulb, cored and thinly sliced, plus 2 tablespoons chopped fennel fronds
• 1/2 English cucumber, thinly sliced
• rye bread, for serving