Which food has less impact on blood sugar?

CRUST (ENRICHED UNBLEACHED WHEAT FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, ASCORBIC ACID ADDED AS A DOUGH CONDITIONER, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], WATER, WHOLE WHEAT FLOUR, SOYBEAN OIL, YEAST, NONFAT DRY MILK, SUGAR, CONTAINS LESS THAN 2% OF THE FOLLOWING: SALT, DRY SOURDOUGH OF RYE [WATER, FERMENTED RYE FLOUR, SALT], EXTRA VIRGIN OLIVE OIL, ENZYMES, WHEAT STARCH. MAY CONTAIN SOY AND SESAME), LOW MOISTURE PART SKIM MOZZARELLA CHEESE (PASTEURIZED PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES), BUFFALO STYLE SAUCE (BUFFALO WING SAUCE [DISTILLED VINEGAR, AGED CAYENNE RED PEPPERS, SALT, WATER, CANOLA OIL, PAPRIKA, XANTHAN GUM {THICKENER}, GARLIC POWDER & NATURAL FLAVOR], SOUR CREAM [GRADE A CULTURED PASTEURIZED CREAM], MODIFIED CORNSTARCH), DICED FULLY COOKED CHICKEN (CHICKEN, WATER, SALT), BUFFALO WING SAUCE (DISTILLED VINEGAR, AGED CAYENNE RED PEPPERS, SALT, WATER, CANOLA OIL, PAPRIKA, XANTHAN GUM [THICKENER], GARLIC POWDER & NATURAL FLAVOR), GREEN ONION.