Combine ground turkey, breadcrumb crumbs, minced garlic, thyme, beaten egg, salt, and pepper in a mixing bowl. Mix thoroughly until all ingredients are evenly incorporated and the mixture becomes cohesive.
Using your hands, form the mixture into evenly sized meatballs, about 1 to 1.5 inches in diameter. Place them on a tray lined with parchment paper for easy handling.
Heat a tablespoon of olive oil in a large skillet over medium heat until shimmering and starting to smoke lightly. Add the meatballs to the pan, ensuring they are spaced apart and not overcrowded.
Cook the meatballs, turning occasionally with tongs or a spatula, until they are browned all over and reach an internal temperature of 165°F (74°C). This typically takes about 8-10 minutes. You may also transfer the meatballs to a baking sheet and bake at 375°F (190°C) for about 15 minutes as an alternative method.
Remove the cooked meatballs from heat, and let them rest for a few minutes. Serve warm, with optional fresh herbs or sauce.