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, SOYBEAN OIL, YEAST, BREAD CRUMBS (WHEAT FLOUR, SUGAR, YEAST, SALT), SUGAR, SALT, CULTURED WHEAT FLOUR. TOPPINGS: LOW MOISTURE MOZZARELLA CHEESE (PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES), SAUCE (WATER, TOMATO PASTE, SOYBEAN OIL, SALT, SEASONING [SALT, PAPRIKA, SPICES, ONION POWDER, GARLIC POWDER, PARMESAN CHEESE {PASTEURIZED CULTURED PART-SKIM MILK, SALT, ENZYMES}], SPICES, GARLIC POWDER), PEPPERONI (PORK, BEEF, SALT, SPICES, DEXTROSE, LACTIC ACID STARTER CULTURE, OLEORESIN OF PAPRIKA, FLAVORING, SODIUM NITRITE, BHA, BHT, CITRIC ACID), GARNISH (GRATED PARMESAN CHEESE [PARMESAN CHEESE {PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES}, CELLULOSE {ANTICAKING}], GRATED ROMANO CHEESE {ROMANO CHEESE MADE FROM COW'S MILK {PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES}, CELLULOSE {ANTICAKING}], DEHYDRATED GARLIC, SPICE).