Cut the chicken breast into approximately 3 cm pieces and season well with salt and pepper.
Cut the spring onions into fine rings.
Heat 2 tablespoons of sesame oil in a wok or large pan over medium-high heat. Add the spring onions and cook for 1-2 minutes until softened. Add the chicken pieces and cook for 5-7 minutes, stirring occasionally, until lightly colored.
Add the flaked almonds and stir to combine, cooking for 1-2 minutes.
Pour in the coconut milk and bring to a simmer over medium heat. Season with curry powder to taste and simmer for 10 minutes.
Add the pineapple pieces and stir to combine. Continue simmering on medium-low heat for 5 minutes until the pineapple is heated through and the chicken reaches an internal temperature of 74°C (165°F).
Season to taste with salt, pepper, and curry powder. Add chili powder to taste if you prefer it spicy.