Mix mayonnaise with curry. Clean and peel the pineapple, cut it in half lengthwise and cut out the stalk. Cut the flesh into slices. Wash the flesh, dab dry, cut in half lengthwise. Season with salt and pepper. Brush with oil.
Grill the chicken filets on the hot grill while turning for about 6 minutes. Grill bacon on both sides in an aluminium grill tray. Grill pineapple on each side for 1-2 minutes. Briefly warm up the bread on the hot grill. Spread the inside with the mayonnaise. Fill with pineapple slices, 1 1⁄2 slice of bacon and 1⁄2 fillet. Sprinkle with fried onions and garnish with thyme as desired.