Heat the oven to 425 F. Toss the plantain slices with 1 tablespoon avocado oil and salt on a parchment-lined sheet pan. Bake 20 to 25 minutes, flipping once, until golden with dark edges.
Meanwhile, heat 2 tablespoons avocado oil in a pot over medium heat. Cook the onion 5 minutes until soft, then add the ginger and garlic for 1 minute.
Stir in the tomato paste, smoked paprika and curry powder. Cook 2 minutes until the paste darkens.
Add the diced tomatoes, black-eyed peas, scotch bonnet, water and salt. Simmer, partly covered, 15 minutes, mashing a few beans against the pot to thicken the sauce.
Remove the pepper and taste for salt. Serve the stew with the baked plantains and lime wedges.