Pour oil to a depth of 2 inches into a large skillet. Heat to 375°. Fry tortillas, 1 at a time, over medium-high heat 30 seconds on each side or until crisp and lightly browned. Drain and keep warm.
Sauté onion, bell pepper, and garlic in hot olive oil in a large skillet over medium-high heat 5 minutes or until tender. Add chickpeas and next 4 ingredients; bring to a boil. Reduce heat, and simmer 5 minutes.
Process chickpea mixture in a food processor or with a hand blender until smooth. Return mixture to skillet. Simmer, stirring occasionally, until very thick. Stir in lime juice, and cook 2 to 3 minutes.
Stir together sour cream and salsa.
Spread chickpea mixture evenly over tortillas. Top evenly with lettuce and tomato. Drizzle with sour cream mixture, and sprinkle with cheese. Serve immediately.
* 1 1/2 (15-ounce) cans navy beans may be substituted for chickpeas. 2 canned jalapeño peppers and 2 drops liquid smoke may be substituted for chipotle peppers. 1/2 cup salsa may be substituted for salsa verde.