Which food has less impact on blood sugar?

ROMAINE LETTUCE, GRILLED CHICKEN BREAST STRIPS [CHICKEN BREAST MEAT (BONELESS, SKINLESS CHICKEN BREAST, WATER, SALT, SUGAR, AND SODIUM PHOSPHATE), SOYBEAN OIL & OLIVE POMACE OIL BLEND (SOYBEAN OIL AND OLIVE POMACE OIL WITH ANNATTO OIL FOR COLORING), SALT, BLACK PEPPER], PARMESAN CHEESE [DOMESTIC PARMESAN CHEESE:(PASTEURIZED PART-SKIM COW'S MILK, CHEESE CULTURES, SALT, ENZYMES), POWDERED CELLULOSE ADDED TO PREVENT CAKING, NATAMYCIN (MOLD INHIBITOR)], SEASONED CROUTONS [ENRICHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID), CANOLA OIL AND/OR SUNFLOWER OIL (WITH ROSEMARY EXTRACT AND ASCORBIC ACID [TO PRESERVE FRESHNESS]), WHEY, SALT, SUGAR, YEAST, SPICES, DEHYDRATED PARSLEY, ONION POWDER, PAPRIKA (COLOR), TURMERIC (COLOR), EXTRACTIVE OF PAPRIKA (COLOR), SPICE EXTRACTIVE, ENZYMES, ASCORBIC ACID]