Season chicken pieces with salt and pepper and sauté in oil until golden. Remove chicken.
In the same pan, sauté garlic, onion, ají and cilantro.
Return chicken pieces to pan, add beer and continue cooking until chicken is tender. Remove pieces, keep them warm.
Add rice, peas, corn and peppers.
Pour water and cook at medium heat for 20 minutes more or until rice is done.
Serve rice with chicken pieces and garnish with pepper strips.