In a large bowl, combine the flaked salmon, breadcrumbs, mayonnaise, onion, bell pepper, egg, Dijon mustard, garlic powder, salt, and black pepper. Mix until well combined.
Shape the mixture into patties, about 2-3 inches in diameter. You should have about 8 patties.
Heat olive oil in a large skillet over medium heat. Once hot, add the salmon patties to the skillet, cooking in batches if necessary to avoid overcrowding.
Cook for 4-5 minutes on each side, or until golden brown and crispy. Remove from the skillet and place on a paper towel-lined plate to drain excess oil.
Serve warm with lemon wedges on the side.