Heat a large, cast iron or heavy-bottomed skillet over high heat.
Add 1 Tablespoon oil then, once hot, add half the peppers and onions. Arrange the vegetables into an even layer in the bottom of the pan then let them sit undisturbed until they become seared on the bottoms, 2-3 minutes.
Add half the garlic powder, half the cumin, salt, pepper, and a drizzle of fresh lemon juice then stir to combine and continue to saute until the vegetables are crisp-tender and caramelized, 3-4 more minutes. Scoop the vegetables onto a plate then repeat with the remaining Tablespoon of oil, vegetables, and seasonings, turning the heat down if necessary to avoid burning.
Divide the lettuce between 4 bowls then top with 1/4 of the fajita vegetables, a scoop of prepared Easy Pinto Beans, plus white rice, salsa, guacamole, tortilla chips, chopped fresh cilantro, and/or shredded cheese.
Notes
Feel free to use canned refried beans. Heat until warm before adding to the Vegetable Fajita Bowls.
Lazy Girl's Guacamole: add ripe avocado to a mixing bowl then season with garlic salt and a drizzle of lemon or lime juice (or not - it's still great without the citrus!) Mash until smooth.