Which food has less impact on blood sugar?

CRUST: ENRICHED UNBLEACHED WHEAT FLOUR (WHEAT FLOUR, NIACIN, IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, CONTAINS 2% OR LESS OF SOYBEAN OIL (WITH CITRIC ACID ADDED AS A PRESERVATIVE), PALM OIL, YEAST (YEAST, SORBITAN MONOSTEARATE, ASCORBIC ACID), BAKING POWDER (CORN STARCH, SODIUM ALUMINUM PHOSPHATE, SODIUM BICARBONATE), SALT, SUGAR, DEGERMED WHITE CORN MEAL, GARLIC POWDER, YEAST, DOUGH CONDITIONER (WHEAT FLOUR, ASCORBIC ACID, ENZYMES). FILLING: PART SKIM MOZZARELLA CHEESE (PASTEURIZED PART SKIM MILK, CULTURES, SALT, ENZYMES), PEPPERONI (PORK AND BEEF, SALT, FLAVORINGS, LACTIC ACID STARTER CULTURE, OLEORESIN OF PAPRIKA, SODIUM NITRITE, BHA, BHT, CITRIC ACID [TO PROTECT FLAVOR]. MAY CONTAIN DEXTROSE, NATURAL FLAVORING, NATURAL SMOKE FLAVORING, SODIUM ASCORBATE [VITAMIN C], SPICES, GARLIC POWDER, SUGAR), COOKED ITALIAN SAUSAGE (PORK, PORK FAT, DEXTROSE, SPICES, SALT, FLAVORINGS, SODIUM PHOSPHATES, YEAST EXTRACT), PROVOLONE CHEESE (PASTEURIZED MILK, CULTURES, SALT, ENZYMES), MARINARA SAUCE (CRUSHED TOMATOES [WATER, CONCENTRATED CRUSHED TOMATOES], TOMATO PUREE [WATER, TOMATO PASTE], DICED TOMATOES, SUGAR, SALT, SOYBEAN OIL, SPICES, FOOD CORN MODIFIED, PARMESAN CHEESE FLAVOR [PARMESAN CHEESE {MILK, CHEESE CULTURES, SALT, ENZYMES}, WATER, DISODIUM PHOSPHATE, ENZYMES], GARLIC, ONION POWDER, GRANULATED GARLIC, CITRIC ACID), ONIONS, GREEN BELL PEPPERS, BLACK OLIVES (RIPE OLIVES, WATER, SALT AND FERROUS GLUCONATE ADDED TO STABILIZE COLOR), RED BELL PEPPERS, GUAR GUM. TOPPING: PARMESAN & ROMANO CHEESE BLEND (PARMESAN CHEESE [MADE FROM COW'S MILK, SALT, ENZYMES], ROMANO CHEESE [MADE FROM COW'S MILK, SALT, ENZYMES], POWDERED CELLULOSE/STARCH BLEND ADDED TO PREVENT CAKING), PARSLEY.