Which food has less impact on blood sugar?

OVEN ROASTED CHICKEN BREAST (CHICKEN BREAST, WATER, SALT, DEXTROSE, SODIUM PHOSPHATE), HERB FOCACCIA (UNBLEACHED ENRICHED WHEAT FLOUR [WHEAT FLOUR, REDUCED IRON, THIAMINE MONONITRITE, RIBOFLAVIN, NIACIN, FOLIC ACID], WATER, SOYBEAN OIL, HONEY, FRESH PARSLEY, SALT, NATURAL WHEAT SOUR, ENZYMES, ASCORBIC ACID, DOUGH CONDITIONER [NATURAL WHEAT SOUR, ENRICHED WHEAT FLOUR {NIACIN, IRON, THIAMINE MONONITRITE, RIBOFLAVIN, FOLIC ACID}, CULTURED WHEAT STARCH AND WHEAT FLOUR], YEAST, MOLASSES, ONIONS, VITAL WHEAT GLUTEN, FRESH ROSEMARY, RED WINE VINEGAR, FRESH BASIL, DOUGH CONDITIONER [MONO AND DIGLYCERIDES WITH CITRIC ACID], GARLIC, BLACK PEPPER), SWISS CHEESE (PASTEURIZED PART SKIM COW'S MILK, CHEESE CULTURES, SALT, ENZYMES), TOMATOES, GARLIC MAYONNAISE (MAYONNAISE [SOYBEAN OIL, EGG YOLK, WATER, CORN SYRUP, VINEGAR, CONTAINS LESS THEN 2% OF: SALT, SPICE, CALCIUM DISODIUM EDTA], CHOPPED GARLIC (GARLIC, WATER, SOYBEAN OIL, OLIVE OIL, PHOSPHORIC ACID), LETTUCE.