In a large bowl, put the 2 lbs. ground chicken thigh & set aside. Then heat a medium frying pan with 1 tbsp. olive oil after it has heated about 2 minutes, add in onion & minced garlic.
Next, take each slice of gouda & fold it in half. Each half will be in the center of your meatloaves. You will then keep folding up the half until you get a smaller square.
Grease a 12-cup muffin tin, then divide the mixture into 12 (about 1/4 cup mixture), push down the middle to put the cheese, then add more mixture to the top.