Which food has less impact on blood sugar?

CRUST: WHEAT FLOUR, WATER, SOYBEAN OIL, DEXTROSE, YEAST, SALT, LEAVENING (STARCH, SODIUM ALUMINUM PHOSPHATE, SODIUM BICARBONATE), CORN MEAL, DOUGH CONDITIONER (L-CYSTEINE). TOPPINGS: SAUCE (WATER, TOMATO PASTE, SOYBEAN OIL, MODIFIED FOOD STARCH, SALT, SPICES, SEASONING [SALT, PAPRIKA, SPICES, ONION POWDER, GARLIC POWDER, PARMESAN CHEESE {PASTEURIZED CULTURED PART-SKIM MILK, SALT, ENZYMES}], GARLIC POWDER, XANTHAN GUM), LOW MOISTURE PART-SKIM MOZZARELLA CHEESE (PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES), COOKED ITALIAN STYLE PIZZA TOPPING (SAUSAGE [PORK, MECHANICALLY SEPARATED CHICKEN, SPICES, SALT, WATER, SUGAR, PAPRIKA, FLAVORING, SODIUM PHOSPHATE], WATER, TEXTURED VEGETABLE PROTEIN [SOY FLOUR, SOY PROTEIN CONCENTRATE, CARAMEL COLOR]), PEPPERONI MADE WITH PORK, CHICKEN AND BEEF (PORK, MECHANICALLY SEPARATED CHICKEN, BEEF, SALT, SPICES, DEXTROSE, LACTIC ACID STARTER CULTURE, OLEORESIN PAPRIKA, SODIUM ASCORBATE, FLAVORING, SODIUM NITRITE, BHA, BHT, CITRIC ACID), PEPPERS, ONIONS, BLACK OLIVES (RIPE OLIVES, SALT, FERROUS GLUCONATE [TO STABILIZE COLOR]).