Chicken burgers with fennel and herb slaw

Ingredients

• 2 skinless chicken breasts (about 550g)
• 2/3 cup panko crumbs
• 1/3 cup (50g) almonds, finely chopped
• 75 g parmesan, grated
• Sea salt
• 1/4 cup plain flour
• 1 large egg, lightly beaten
• 6 burger buns
• Butter, for buns
• Fennel and herb slaw
• 200 g fennel, finely sliced
• 200 g cabbage, finely sliced
• 1/2 small red onion, halved, finely sliced
• 1 cup herbs (we used a mixture of parsley, mint, dill and lemon balm), finely chopped
• Zest and juice 1 lemon
• 2 tbsp olive oil
• Caper mayo
• 2/3 cup mayonnaise
• 4 tbsp capers, finely chopped
• 1 clove garlic, minced
• 4 tsp finely chopped red onion