Which food has less impact on blood sugar?

CRUST: ENRICHED WHEAT FLOUR (FLOUR, NIACIN, IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID, ENZYME, ASCORBIC ACID), WATER, SOYBEAN OIL, YEAST, BREAD CRUMBS (WHEAT FLOUR, YEAST, SUGAR, SALT), OLIVE OIL, SUGAR, SALT, CULTURED WHEAT STARCH, HONEY, SODIUM BICARBONATE, SODIUM ALUMINUM PHOSPHATE, L-CYSTEINE, CITRIC ACID. TOPPINGS: CHEESES (LOW MOISTURE PART-SKIM MOZZARELLA [PASTEURIZED PART-SKIM MILK, CHEESE CULTURE, SALT, ENZYMES], CHEDDAR [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES, ANNATTO COLOR]), RANCH SAUCE (WATER, RANCH SEASONING [NONFAT DRY MILK, RANCH SEASONING {MALTODEXTRIN, SALT, DEHYDRATED ONION, DISODIUM INOSINATE AND DISODIUM GUANYLATE, DEHYDRATED GARLIC, PARSLEY, CARRAGEENAN, SPICE, SOYBEAN OIL AND LESS THAN 2% CALCIUM STEARATE TO PREVENT CAKING}, MODIFIED FOOD STARCH, BUTTERMILK SOLIDS, MALTODEXTRIN, SALT, SOY LECITHIN, XANTHAN GUM AND SPICE], SOYBEAN OIL), FULLY COOKED CHICKEN BREAST MEAT WITH RIB MEAT (CHICKEN BREAST MEAT WITH RIB MEAT, WATER, CHICKEN FLAVOR [DEHYDRATED CHICKEN BROTH, CHICKEN POWDER, AND NATURAL FLAVOR], CARRAGEENAN, SALT, CORNSTARCH, SPICE), FULLY COOKED BACON TOPPING (CURED WITH WATER, SALT, SUGAR, SODIUM ERYTHORBATE, AND/OR SODIUM ASCORBATE, SODIUM NITRITE. MAY CONTAIN NATURAL SMOKE FLAVORING, SODIUM PHOSPHATE), CARAMELIZED ONIONS (ONION, NATURAL ONION FLAVORING), PARSLEY.