3/4 pound boneless skinless chicken breasts, cut into 1/2-inch strips
1 small onion, sliced and separated into rings
1/2 each medium green, sweet red and yellow pepper, julienned
4 flour tortillas (6 inches), warmed
Shredded cheddar cheese, optional
In a small bowl, combine the first 7 ingredients. Place chicken and vegetables in a single layer in a greased 15x10x1-in. baking pan; drizzle with 1/4 cup lemon juice mixture. Broil 4-6 in. from the heat for 4 minutes.
Turn chicken and vegetables; drizzle with remaining lemon juice mixture. Broil 4 minutes longer or until chicken juices run clear. Serve on tortillas, with cheese if desired.