Preheat oven to 375°F. Line a rimmed sheet pan with foil and lightly spray the middle with nonstick spray.
Heat olive oil in a skillet over medium high. Add onion and bell pepper and cook until softened, about 5 minutes. Add garlic and cook 30 seconds to 1 minute more, just until fragrant. Remove from heat. Stir in thyme, parsley, and ½ teaspoon salt. Let cool slightly.
1 tablespoon olive oil, 1 medium onion, 1 bell pepper, 2 cloves garlic, 1 teaspoon dried thyme, 1 teaspoon dried parsley, 1 teaspoon fine sea salt
In a bowl, stir together panko and milk. Let sit a few minutes to allow the milk to soak in.
1 cup panko bread crumbs, 1/2 cup milk
When the vegetables are cool enough to handle, add them to a large bowl along with the ground turkey, soaked panko, beaten egg, Worcestershire, remaining salt, and pepper.
1 1/2 pounds ground turkey, 1 large egg, 1 tablespoon Worcestershire sauce, 1/4 teaspoon ground black pepper
Combine ingredients until uniformly mixed and shape into a loaf. Carefully slide out of the bowl onto the sheet pan, and reshape as needed.
Bake 30 minutes, then brush on barbecue sauce. Bake another 20-30 minutes, or until an instant read thermometer reads 160°F.
1/3 cup barbecue sauce
Let cool 10 minutes before slicing and serving to allow juices to settle.