Preheat oven to 350°F. In large bowl, whisk together eggs, milk, Tex-Mex seasoning, salt and pepper. Crumble in bread; mix until bread softens. Mix in beef, red pepper, corn, cilantro, onion, and 1 cup of the cheese.
Place in 9- x 5-inch loaf pan. Mix barbecue sauce with chipotle and adobo sauce; brush over top of meatloaf. Sprinkle with remaining cheese.
Bake, uncovered, for 70 to 75 minutes or until instant-read thermometer inserted into center reads 160°F. Let stand for 10 minutes. Slice and sprinkle with green onion.