Which food has less impact on blood sugar?

CRUST: ENRICHED FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID, ENZYME), WATER, SOYBEAN OIL, YEAST, CORN SYRUP, PARTIALLY HYDROGENATED SOYBEAN OIL, CORN MEAL, WHEAT SEMOLINA, SUGAR, SALT, NATURAL AND ARTIFICIAL FLAVORED OIL (PARTIALLY HYDROGENATED SOYBEAN OIL, NATURAL GARLIC FLAVOR, SALT, ARTIFICIAL FLAVOR, SOY LECITHIN, BETA CAROTENE [COLOR], VITAMIN A PALMITATE), DOUGH CONDITIONER (DATEM, WHEAT GLUTEN, SUGAR, DEXTROSE, MALTED BARLEY FLOUR, GUAR GUM, CALCIUM PYROPHOSPHATE, SOY LECITHIN, ASCORBIC ACID, ENZYME), SODIUM BICARBONATE, SODIUM ALUMINUM PHOSPHATE, VITAL WHEAT GLUTEN, WHEAT PROTEIN ISOLATE (WHEAT GLUTEN, LACTIC ACID), OLIVE OIL, L-CYSTEINE. TOPPINGS: CHEESES (LOW MOISTURE MOZZARELLA [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], PROVOLONE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], SMOKED GOUDA [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES, ANNATTO {COLOR}, NATURAL FLAVORS], FONTINA [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES], PARMESAN [PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES]), SAUCE (WATER, TOMATO PASTE, SOYBEAN OIL, MODIFIED FOOD STARCH, SALT, SPICES, GARLIC POWDER, XANTHAN GUM, PAPRIKA, ONION POWDER, PARMESAN CHEESE [PASTEURIZED CULTURED PART-SKIM MILK, SALT, ENZYMES]), OREGANO, PARSLEY, BASIL.