Preheat oven to 350 degrees.
Trim excess leaves and large stem off cauliflower crown.
Bring a large stockpot of water to a boil, add cauliflower and cover.
Place salmon on foil and sprinkle with a little taco seasoning. Place slices of meyer lemon over seasoning, and fold foil to make a pouch around salmon. Bake at 350 for 10 minutes- until salmon is cooked through.
In a large, heavy pan, heat oil on medium high until shimmery.
Add onion and peppers, cook until slightly browned- about 8 minutes. Stir occasionally to prevent burning.
Add taco seasoning- add up to 2 tbsp of water if needed to help taco seasoning coat food.
Remove cauliflower from boiling water when soft to the touch.
Using your hands, crumble cauliflower into small shreds that look like "rice".
Season with salt and pepper.
Layer cauliflower rice, seasoned vegetables and salmon in a bowl, garnishing with green onion. Squeeze a little meyer lemon juice over the top.
Enjoy!