Sterilize six 8oz canning jars and lids in boiling water.
Mix finely chopped and seeded Red Bell Pepper, Yellow Bell Pepper, Green Bell Pepper, and Jalapeño in a large saucepan over high heat.
Add Apple Cider Vinegar and powdered fruit pectin. Stir constantly and bring to a rolling boil. Remove from heat.
Add sugar and place back on high heat. Return to a rolling boil for one minute.
Remove from heat. Skim off any foam from the top.
Ladle jelly evenly into sterile jars, filling to ¼ inch from the top of the jar. Cover with flat lids and screw on screw bands tight.
Place jars into a canner with hot water that is not boiling. Water should completely cover the jar. Cook on high heat to reach a boil. Process for 5 minutes, then remove from heat.
Cool jars completely. Check seals by pressing centers of lids with your finger. (If the lid springs back, the lid is not sealed and refrigeration is necessary.)