Remove the stems from the shishito peppers, wash them, and dry thoroughly.

Place 1 tbsp of flour into a ziplock bag.

Add the shishito peppers to the bag and shake vigorously to coat them evenly with flour.

Microwave the peppers for 3 minutes.

While microwaving, mix 2 tbsp soy sauce, 1 tsp chili powder, 1 tsp minced garlic, 1 tsp sesame oil, and 1/2 tbsp sesame seeds in a bowl to prepare the seasoning.

Remove the microwaved peppers and check for even steaming.

Add the prepared seasoning to the steamed peppers and shake or mix well.