Preheat the oven to 375 degrees. Mix together the garlic powder, cumin, oregano, paprika, salt, and pepper in a medium bowl.
Stir in the eggs, whisking to fully combine. Stir in the drained green chiles. Add the oats and ground beef and mix until homogenous. I find this step is easiest to do with clean hands by just smushing everything together. Some elbow grease and a wooden spoon will also work.
Form the mixture into a ball and cut the ball into quarters. Form each quarter into one small loaf or ball.
Place on a parchment-lined rimmed baking pan and bake 375 until the internal temperature is 160 and the edges are crisp and brown, about 40 minutes. Serve immediately and refrigerate any leftovers.