First of all, you have to do some prep work on the chile peppers, only then you can move forward towards the actual recipe.
First, wash the chile and halve them to clean all the seeds and waste inside them. Once done wash them again. This time you should wash them with cold water.
Drain all the water afterward.
In a large dish or bowl pack the halved and cleaned peppers and cook in the oven for more than half an hour after pouring all of the olive oil in it. The temperature of the oven should be 350 degrees for cooking the peppers.
After the cooking is done, you will see the peppers are all tenderized properly. Let them air cool for some time.
In the next step chop the veggies including parsley, capers, and rockets. Also, chop the anchovies. Put all of them together in a bowl and mix. Pour some vinegar into the same bowl.
Season this chopped mixture with salt and pepper and your mixture for stuffing is ready.
Now fill this mixture into the bell peppers. Serve after arranging in the platter and have Fun!