Which food has less impact on blood sugar?

GRILLED WHITE CHICKEN (GRILLED CHICKEN BREAST WITH RIB MEAT, WATER, CANOLA OIL AND EXTRA VIRGIN OLIVE OIL BLEND, LEMON JUICE, SODIUM TRIPOLYPHOSPHATE, SALT), SPINACH TORTILLA (ENRICHED BLEACHED WHEAT FLOUR [FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], WATER, VEGETABLE SHORTENING [SOYBEAN OIL, VEGETABLE MONO & DIGLYCERIDES, TOCOPHEROLS (VITAMIN E) AND VITAMIN C PALMITATE (AS ANTIOXIDANTS)]. CONTAINS LESS THAN 2% OF EACH OF THE FOLLOWING: SPINACH SEASONING [PARSLEY, SPINACH POWDER, FD&C YELLOW #5 & BLUE#1, SALT, LEAVENING (SODIUM ACID PYROPHOSPHATE, SODIUM BICARBONATE, CORN STARCH, MONOCALCIUM PHOSPHATE)], MONOGLYCERIDES, POTASSIUM SORBATE, FUMARIC ACID, CALCIUM PROPIONATE, GUAR GUM, XANTHAN GUM, SODIUM METABISULFITE, MICROCRYSTALLINE CELLULOSE, DICALCIUM PHOSPHATE), LETTUCE, DRESSING (CANOLA OIL, WATER, PARMESAN CHEESE [SKIM MILK, CULTURE, SALT, ENZYMES], EGG YOLK, DIJON MUSTARD [WATER, MUSTARD SEED, DISTILLED VINEGAR, SALT, WHITE WINE, CITRIC ACID, TURMERIC (COLOR), TARTARIC ACID, SPICES], DISTILLED VINEGAR, DRIED GARLIC, LEMON JUICE CONCENTRATE, SUGAR, SALT, ANCHOVIES, SPICE, ANCHOVY POWDER [MALTODEXTRIN, ANCHOVY EXTRACT, SALT], XANTHAN GUM, MUSTARD FLOUR, CARAMEL COLOR, ANNATTO EXTRACT [COLOR]), CREAM CHEESE (PASTEURIZED CULTURED MILK AND CREAM, SALT, STABILIZERS [XANTHAN AND/OR CAROB BEAN, AND/OR GUAR GUM]), PARMESAN CHEESE (PARMESAN CHEESE [PASTEURIZED PART-SKIM COW'S MILK, CHEESE CULTURES, SALT, ENZYMES], POWDERED CELLULOSE ADDED TO PREVENT CAKING, NATAMYCIN [A NATURAL MOLD INHIBITOR]).