Rinse the jalapenos and trim off the woody end from the stems. In a 4 - 6 quart stainless steel or enameled pot, combine the vinegar, water, sugar, salt, sesame oil and pickling spice. Add the jalapenos, onion, carrot, and garlic. Cover and bring to a simmer over high heat, stirring occasionally. Reduce the heat to low and simmer for five minutes. Remove from the heat.
While still hot, transfer the jalapenos and pickling juice to a sterilized 2 - 3 quart canning jar or other glass container. Cover tightly with lid or plastic wrap and refrigerate for at least one week before using.
To make the appetizer:
Slice the pickled jalapenos in half lengthwise not quite all the way through, leaving the two halves attached at the stem end. Using a knife or spoon, remove and discard the seeds and ribs. In a small mixing bowl, combine the peanut butter chutney. Stuff the chiles with the peanut butter mixture and press the halves back together. Arrange on a platter and serve.