Preheat the grill or stovetop pan over medium heat.
In a bowl, mix garlic powder, onion powder, paprika, salt, and pepper.
Coat the chicken breasts with the spice mixture evenly.
Grill the chicken for 6-7 minutes per side or until fully cooked.
Remove chicken and let it rest for a few minutes.
Slice the chicken into slider-sized pieces.
Toast the slider buns on the grill until golden brown.
Assemble the sliders by placing chicken on the bottom bun.
Add barbecue sauce, pickles, lettuce, and tomato.
Top with the other half of the bun and serve immediately.