Place all of the seeds, flax meal, salt, and pepper in a mixing bowl and stir to combine.
Add the water and honey, and mix well. Set the mixture aside for about 15 minutes, or until the liquid is absorbed.
While the seeds are sitting, preheat the oven to 300℉ and set the oven rack to the middle position. Line a large (11 x 17-inch) baking pan with parchment paper.
When the water is absorbed, and the seed mixture resembles dough, stir well to combine everything and work the mixture into a ball.
Lay the dough onto the lined baking sheet, and with the backside of a spatula, spread it as thin as you can, without leaving any openings in the dough. It should spread out to within about 1 1/2 inches of the edges of the pan.
Bake for 45-50 minutes, or until the flatbread is set and just starting to turn golden.
For crispy crackers, turn off the oven and leave the pan in the oven for another 15 minutes, then remove the pan from the oven.Let the cracker cool. Cut or break into pieces.
Store crackers in an airtight container in the refrigerator for up to one week.
Notes
Nutrition information is for one piece, based on 24 pieces total.If desired, store these crackers in an airtight container in the freezer for up to three months.