Mix together flour, salt, baking soda, and baking powder. Cut in butter (or use a food processor) until fully incorporated and the mixture looks like granules.
In another bowl, mix together the yogurt, cheese, and peppers, then stir into the flour mixture.
Stir until dough comes together, then form into a ball and dump it onto a lightly floured counter. Form into a rectangle and then fold. Pat down (do not roll) and fold again, then repeat. Pat into a rectangle about 1/2-inch thick.
Cut out biscuits and put on an ungreased baking sheet. Bake for 15 minutes, or until golden brown.