In an oven-proof skillet, melt coconut oil over medium-high heat. Add onion, jalapeno, and chorizo to the pan; cook, breaking up the chorizo, until onion is translucent and chorizo is cooked through. Add ½ beer and stir to get the browned bits off the bottom. Remove about ½ cup of the chorizo mixture to a bowl. Turn off the heat and stir in the cheese. Add more beer if the mixture gets too thick. Spoon the reserved chorizo mixture into the center of the skillet, cover with aluminum foil, and bake in the preheated oven for about 10 minutes or until the cheese in completely melted.