Which food has less impact on blood sugar?

CRUST (ENRICHED WHEAT FLOUR [FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID, ENZYMES, ASCORBIC ACID], WATER, SOYBEAN OIL, BREAD CRUMBS [WHEAT FLOUR, SUGAR, YEAST, SALT], SUGAR, YEAST, SALT, OLIVE OIL, MONOCALCIUM PHOSPHATE, SODIUM BICARBONATE, L-CYSTEINE), SAUCE (ITALIAN TOMATOES, OLIVE OIL, ONION, SALT, GARLIC, CARROTS, SPICES), UNCURED+ PEPPERONI +NO NITRITES OR NITRATES ADDED EXCEPT THOSE NATURALLY OCCURRING IN SEA SALT AND CULTURED CELERY JUICE OR POWDER (PORK, BEEF, SEA SALT, SPICES, CONTAINS 2% OR LESS OF: NATURAL FLAVORS, LACTIC ACID STARTER CULTURE, CULTURED CELERY JUICE, DEXTROSE, EXTRACTIVES OF PAPRIKA, CHERRY POWDER, MAY CONTAIN: CULTURED CELERY POWDER, GARLIC POWDER, OLEORESIN OF PAPRIKA), WHOLE MILK MOZZARELLA (PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES), PROVOLONE CHEESE (PASTEURIZED WHOLE MILK, CHEESE CULTURE, SALT, ENZYMES), FONTINA CHEESE (PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES, POWDERED CELLULOSE [ANTICAKING AGENT]), PARMESAN AND ROMANO CHEESE (PARMESAN CHEESE [CULTURED, PART-SKIM MILK, SALT, ENZYMES], ROMANO CHEESE FROM COW'S MILK [CULTURED, PART-SKIM MILK, SALT, ENZYMES], POWDERED CELLULOSE [ANTICAKING AGENT], SALT), PARMESAN CHEESE (PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES, POWDERED CELLULOSE [ANTICAKING AGENT]), SPICES.