1. Soak the Chicken
Place chicken in a bowl and cover with fresh lemon juice.
Let soak for 20–30 minutes.
Drain completely and discard the lemon juice before cooking.
2. Cook the Chicken & Vegetables
Heat oil in a large pan or pot over medium heat.
Add drained chicken to the pot. Add tomato, onion and bell pepper Season with salt, paprika, black pepper, garlic powder, and cumin. Stir everything together.
Cover and cook on low heat for about 1 hour, stirring occasionally, until the chicken is very tender.
Shred or chop the chicken directly in the pot and allow the mixture to reduce slightly if needed.
3. Make the Avocado Cilantro Salsa
Blend avocado, cilantro, salt, and water until smooth and pourable. Adjust salt to taste.
4. Assemble & Grill
Heat a grill pan or skillet over medium heat.
Lay down a tortilla.
Sprinkle cheese over half.
Add chicken filling on top of the cheese.
Fold tortilla in half.
Cook until crisp and golden.
Flip and cook until the other side is crisp and cheese is melted.