Combine everything except the tortillas, butter, salmon, and spinach in a food processor. Pulse until the beans are broken up into small pieces and the mixture is evenly saucy.
Warm the tortillas for a few seconds on each side in a dry skillet. Spread with butter.
Flake the salmon and distribute in the center of the tortillas.
Top with a large scoop of the chickpea salad, and a very large handful of chopped or torn spinach.
Close the tortillas and serve immediately.