Arrange racks on top + bottom thirds of oven, then preheat oven to 400°F; place 4 tortillas on baking sheet, then brush lightly with oil + pinch of salt; bake on top rack 7-9 min until starting to crisp

Meanwhile, pat fish dry, line a sheet pan with foil + drizzle fish with oil + salt/pep; bake on bottom rack 10-12 min until firm, opaque + cooked through; break fish into bite size pieces

Warm bean salad or enjoy cold

Spread 1 tbsp sour cream onto each tortilla, then top with halibut + bean salad