Which food has less impact on blood sugar?

INGREDIENTS: CRUST (ENRICHED WHEAT FLOUR [WHEAT FLOUR, NIACIN, FERROUS SULFATE, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID, ENZYME], WATER, SOYBEAN OIL, YEAST, CONTAINS 2% OR LESS OF THE FOLLOWING: SUGAR, BREADCRUMBS [ENRICHED BLEACHED WHEAT FLOUR {WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID}], SALT, HONEY, SOY LECITHIN [PROCESSING AID]), SAUCE (WATER, TOMATOES, SUGAR, SALT, SPICES, ONION POWDER, XANTHAN GUM, GARLIC POWDER), CHEESES (LOW MOISTURE PART SKIM MOZZARELLA CHEESE [PASTEURIZED PART SKIM MILK, CHEESE CULTURES, SALT, ENZYMES], PARMESAN CHEESE [PASTEURIZED COW'S MILK, CHEESE CULTURES, SALT, ENZYMES], ROMANO CHEESE [PASTEURIZED COW'S MILK, CHEESE CULTURES, SALT, ENZYMES], ASIAGO CHEESE [PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES]), PEPPERONI (PORK, BEEF, SALT, CONTAINS 2% OR LESS OF SPICES, DEXTROSE, LACTIC ACID STARTER CULTURE, OLEORESIN OF PAPRIKA, SODIUM NITRITE, BHA, BHT, CITRIC ACID, MAY CONTAIN: DEHYDRATED GARLIC, FLAVORING, SODIUM ASCORBATE), COOKED SAUSAGE (PORK, WATER, SPICES, SALT, CORN SYRUP SOLIDS, PAPRIKA, NATURAL FLAVORING, SUGAR), RED PEPPERS, GREEN PEPPERS, BLACK OLIVES (OLIVES, WATER, SALT, FERROUS GLUCONATE), ONIONS.