Brown the ground beef in a skillet over medium-high heat, breaking it up, for 5 minutes. Add the onion, garlic and paprika and cook 3 minutes more. Season with salt and pepper, take off the heat, and stir in the olives, chopped egg and parsley. Cool.
For the dough, microwave the mozzarella and cream cheese in 30-second bursts, stirring, until smooth. Mix in the almond flour and egg and knead into a smooth dough.
Place the dough between two sheets of parchment paper and roll it out very thin, about 1/8 inch. Chill for 10 minutes, then cut into 8 rectangles of about 4 by 6 inches.
Put a heaped spoonful of filling on one half of each rectangle, fold the dough over and press the edges firmly with a fork to seal.
Heat 1 inch of avocado oil in a deep skillet to 350°F (175°C). Fry the pastéis two or three at a time for 1 to 2 minutes per side, until golden and blistered. Drain on paper towels and serve hot.