You can increase the protein and reduce the carbs by using 1/2 cup chickpea flour instead of the other flour.
You can buy already toasted sesame seeds, but making them is very easy. Just heat them in a skillet or on a baking sheet in a toaster oven, stirring often, until they begin to turn golden and pop. Watch them carefully because they can burn in a matter of seconds. To grind them, put them in a mortar and crush lightly with a pestle or pulse in a food processor.
Makes about 45 1x1-inch crackers.