To a bowl, whisk 1 cup spelt flour, water, honey, and yeast together. Let stand until yeast softens and mixture is bubbly, about 25 minutes.
Stir remaining flour (a little less than 2 cups - you can add a little more later if needed), olive oil, and salt into yeast mixture. Beat mixture in a bowl of stand mixer fitted with your dough hook attachment, adding more flour as necessary, until a soft and tacky dough forms, 3 to 4 minutes. You want a little more wet than dry. Form into a large ball.
Place dough in mixing bowl with a little olive oil, cover bowl with a plate, and let rise until doubled in size, approx 90 minutes.
Punch dough down and transfer to a lightly floured work surface. Divide into 4 balls; cover each and let rest until dough rises slightly, 45 minutes. Roll into desired shapes and thickness.