Dissolve yeast and sugar in water; stand 5-10 minutes until bubbly and activated.
Mix in flour, salt, and 2 tablespoons oil until rough dough forms; knead on floured surface 10 minutes until smooth.
Place in oiled bowl; cover with damp towel and rise in warm place 1-1.5 hours until doubled.
Turn onto work surface; shape round boule on parchment-lined baking sheet.
Brush entire surface with water and remaining oil; press dukkah generously over top and sides.
Rise 30-40 minutes; slash top with sharp knife. Bake at 400°F for 35-40 minutes until crust is deep golden and crispy.