1: Make the marinade: In a food processor, blend chipotle peppers, garlic cloves, lemon juice, salt, and pepper until smooth. Reserve 1 1/2 tbsp of the marinade for the chipotle sauce.
2: Marinate the chicken: In a large bowl, combine the chicken and marinade mixture. Add oil and mix well.
3: Cook the chicken: Heat a skillet over medium-high heat. Add the chicken and cook until browned and cooked through.
4: Make the chipotle yogurt sauce: In a bowl, combine yogurt, mayonnaise, lemon juice, salt, pepper, garlic powder, and reserved chipotle sauce. Mix well.
5: Assemble the burrito: Add cooked chipotle chicken, chipotle yogurt sauce, mixed cheese, salsa, lettuce, sour cream, and guacamole in a tortilla. Wrap it by folding sides and make a burrito.
6: Warm the tortilla: Warm the burrito in a skillet on medium low for 2-3 minutes each side.
7: Serve and enjoy.