Heat olive oil in a large skillet over medium heat.
Add the chopped onion and bell pepper; sauté until softened.
Stir in the minced garlic; cook for an additional minute.
Add ground beef to the skillet; cook until browned, breaking it apart with a spatula.
Season the meat with paprika, salt, and pepper; mix well.
Stir in the diced potatoes and tomatoes, then mix thoroughly.
Cover the skillet; reduce heat to low and simmer for about 20 minutes.
Check potatoes for doneness; they should be tender when pierced with a fork.
Taste and adjust seasoning if necessary; serve warm.