Pat chicken wings dry and season with salt, black pepper, and garlic powder.
Heat olive oil in a large skillet or Dutch oven over medium-high heat.
Add the chicken wings and brown them on all sides, about 5-7 minutes.
Remove the wings and set aside. In the same pan, sauté chopped onions until softened, about 3 minutes.
Add minced garlic and cook for another 30 seconds until fragrant.
Pour in the beer, scraping the bottom of the pan to loosen any browned bits.
Return the wings to the pan, reduce heat to medium-low, cover, and simmer for 25 minutes, turning wings halfway through.
Remove the lid and cook for an additional 5 minutes to reduce the sauce slightly and thicken.
Serve warm, spooning the peppery beer sauce over the wings.