Add the ginger, garlic, onion and the remaining 1/2 tablespoon of oil to the skillet and cook over low heat, stirring occasionally, until softened, about 10 minutes. Add the curry powder and cayenne and cook, stirring, until fragrant, about 3 minutes. Add the ground almonds and chicken stock and bring to a simmer. Return the chicken breasts to the skillet and add the apricots. Simmer over low heat until the chicken is cooked through, about 5 minutes.