Take 6 oz ground beef and place in bowl. Mix in 1/2 tsp ground black pepper, 1 tsp salt, and 2/3 tsp onion powder. Separate in two groups, and pack into patty.

Slice jalapeño into 1/4 inch thick slices. Cut pineapple ring evenly with pieces 1/2" thick.

Take bottom patty, place jalapeño and pineapple in center, along with 1 1/2" tbsp shredded cheese. Place other patty on top, press, and seal sides together.

Place burger in pan, sear outside, then reduce heat and cover. Cook to desired doneness, at least 155°F.

Remove burger from heat, place on paper towel and set aside. Wipe pan clean and return to heat. Spread mayo across inside of buns, and place mayo - down in pan. Toast lightly, and assemble burger.