Chicken Fajita Roll-Ups - I added onion powder to the marinade and stuffed with yellow, red, and orange peppers and onions. I will definitely be making this again! Just a note, I've tried multiple variations of this ... sweet and sour, cajun, etc.
RAINBOW STICKS: These look really effective, don't they? You could make and eat these in combination with learning the rainbow song, finding out about different colours (for younger children), or learning about the role of colours in food and health (for older children). Get children to assemble these themselves, following the colour order.