Heat your skillet over medium-high heat, add the ground beef, and cook until no pink remains (about 5-7 minutes). Drain any excess grease and return the beef to the pan.
Add salt, black pepper, and red pepper flakes to the beef and stir well. Then pour in the beer and let it simmer for about 4-5 minutes so the liquid reduces slightly and the flavors concentrate.
Reduce the heat to medium-low. Add the shredded Pepper Jack and cubed Velveeta to the skillet. Stir occasionally until all the cheese is melted and the mixture becomes smooth and creamy.
Stir in the black beans, diced red onion, jalapeño, and the drained tomatoes with green chilis. Continue cooking for about 5 more minutes until everything is heated through and well combined. Garnish with fresh tomatoes, chopped cilantro, and a squeeze of lime. Serve immediately with tortilla chips.