In a small dry skillet over medium heat, toast the sliced almonds for 2-3 minutes until golden and fragrant, then set aside.
Season the diced chicken breast with sea salt and black pepper.
Heat the olive oil in a medium saucepan over medium heat; add the onion and garlic, sautéing until translucent and aromatic.
Add the chicken to the pan and cook for 4-5 minutes until lightly browned on all sides.
Stir in the basmati rice, coating the grains in the oil for 1 minute to enhance the nutty flavor.
Pour in the chicken broth and bring to a boil, then reduce heat to low, cover, and simmer for 15 minutes or until the liquid is absorbed.
Remove from heat and let stand covered for 5 minutes before fluffing with a fork.
Stir in the fresh parsley, dill, lemon juice, and lemon zest, then garnish with the toasted almonds before serving.