Which food has less impact on blood sugar?

WHOLE WHEAT TORTILLA(WHOLE WHEAT FLOUR, WATER, ENRICHED FLOUR WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), SUNFLOWER OIL, CONTAINS 2% OR LESS OF THE FOLLOWING: CULTURED WHEAT FLOUR, WHEAT GLUTEN, SOY LECITHIN, GUAR GUM, OAT FIBER, POTASSIUM CHLORIDE, YEAST, SALT. CITRIC ACID, SODIUM ACID PYROPHOSPHATE. BAKING SODA, CORN STARCH, MONOCALCIUM PHOSPHATE, VINEGAR, NATURAL FLAVOR, MAGNESIUM CARBONATE), COOKED WHITE CHICKEN MEAT(BONELESS, SKINLESS CHICKEN BREASTS WITH RIB MEAT, WATER, SEASONING [MALTODEXTRIN, YEAST EXTRACT, SALT, SUGAR, DRIED ONION, DRIED GARLIC, SUNFLOWER OIL, VEGETABLE STOCK [CARROT, ONION, CELERY], 2% OR LESS NATURAL FLAVOR, NATURAL SMOKE FLAVOR, RICE FLOUR, SOYBEAN OIL, GRILL FLAVOR [FROM SUNFLOWER OIL, CANOLA OIL), VINEGAR, SODIUM PHOSPHATES, SALT), TOMATO, ROMAINE LETTUCE, DIJON HONEY MUSTARD(SOYBEAN OIL, WATER, SUGAR, DISTILLED VINEGAR, HONEY. MUSTARD SEED, EGG YOLK, SALT, WHITE WINE. SPLOE, NATURAL FLAVOR, XANTHAN GUM, CITRIC ACID, TARTARIC ACID, OLEORESIN TURMERIC, OLEORESIN PAPRIKA, CALCIUM DISODIUM EDTA [ADDED TO PROTECT FLAVOR]).