Thaw frozen salmon according to package instructions. I used pre-marinated for simplicity but you could season it your self with Cajun seasoning or even use fresh salmon.
Slice peppers and onion into thin slices.
Place salmon pieces on individual pieces of aluminum foil. Top each with half of the peppers and onions.
Drizzle 1-2 tsp olive oil over each packet.
Seal packets by folding over and rolling up the seams so there are no holes.
Bake for 20 minutes at 425 degrees or until salmon is done.
Meanwhile, put rice, appropriate amount of water, and Cajun seasoning in the rice cooker. Set it and forget it.
Go put your feet up until both timers go off, then scoop rice onto plate and top with contents of a foil packet. Enjoy!