Peel garlic cloves and juice lemon. Place garlic, lemon juice, and salt in a food processor and process until garlic is very finely chopped. Add olive oil and process for approx. 30 seconds. Add mayonnaise and process for approx. 15 seconds more. Set aside.
Wash the peppers thoroughly and dry well with paper towels. Heat vegetable oil in a frying pan and add peppers, frying on medium-high heat and using tongs to turn often until skin blisters and browns, approx. 5 – 6 min. Remove from pan, drain on a paper towel-lined plate, and sprinkle with flaky sea salt. Serve immediately with garlic dip. Enjoy!