Preheat oven to 375 F degrees and position oven rack to the lower-middle position.
To a mixing bowl, add cornmeal, flour, baking powder, sugar and salt, and whisk to combine well.
To another large mixing bowl, add milk, eggs, melted butter and honey. Whisk to combine. Add dry ingredients mixture and use a wooden spoon to combine. Stir in jalapeños and cheddar cheese. Stir until no flour streaks remain, but don't OVER mix. Set aside.
Heat a cast iron pan over HIGH heat for a minute. Add bacon grease and let it heat up and melt over the bottom of the pan. Turn off the heat and pour in the cornbread batter. Use wooden spoon to spread batter in evenly. If using, top with jalapeño slices, and/or additional cheddar cheese.
Bake 20-25 minutes, until toothpick inserted in the center comes out with a few moist crumbs.