Preheat oven to 425 F. Place lemon slices down as a platform for the fish in a 9 x 6 baking dish or parchment lined baking sheet. Pat cod fillets dry with paper towel.
In a shallow bowl add the almond flour, garlic powder, paprika, sea salt and ground black pepper and combine.
In another shallow bowl combine extra virgin olive oil and lemon juice.
Drench each cod fillet one by one into the olive oil lemon mixture then place each drenched fillet into the almond flour mixture and generously coat on both sides of the fish.
Place each coated fillet on top of the lemon slices on the baking sheet or dish.
Bake in oven for 16 minutes. Set oven to broil and brown on the tops watching carefully to prevent burning 2-4 minutes.