Clean, wash and chop the spring onions. Cut the pineapple into pieces. Wash the meat and dab dry. Heat 1 tablespoon of oil in a small pot, fry the spring onions and pineapple briefly. Add lentils, dust with curry, sauté and deglaze with stock. Bring to the boil and simmer at medium heat for about 12 minutes.
Season to taste with salt, sugar, coriander and vinegar. In the meantime heat the remaining oil in a small pan. Fry the meat for about 12 minutes while turning. Season meat with salt and pepper. Cut the chicken filet into slices and arrange on a plate with lentil vegetables. Garnish with coriander and pineapple wedges