There is a bread on Amazon but I haven't tried it yet.

ThinSlim Foods 45 Calorie, 0g Net Carb, Love-The-Taste Low Carb Bread Plain https://www.amazon.com/dp/B00GU19JRI/ref=cm_sw_r_cp_apa_i_Bf5sCbY8ZBNN7

Just checked and it's currently unavailable.

This bread isn't nearly as hard as yeast bread. Much more on the level of muffins or cake.