Preheat the oven to 350 degrees F. Spread the bacon on a rimmed baking sheet and bake until crispy, 10 to 15 minutes.
Mix the mayonnaise, curry powder and lime juice in a bowl and transfer to a squeeze bottle.
Heat the oil in a deep fryer or large pot. Fry the French fries until crisp and cooked through. Transfer to a plate. Season with the blackening spice, salt and pepper.
Drizzle the curry mayonnaise over the top. Garnish with the crumbled feta and bacon.
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